Whenever bitcoin price falls down is a good time to buy in the dip. I'm regretting it right now, can't deposit yesterday and it's too late to buy at the moment compared to a few hours ago when the prices hit the bottom of the floor, most coins have regained the value and increases like 30-35%, even bitcoin slowly recover above $11K and maybe will get back to $13K soon.
Why betting on the price when you can get more profits by taking advantages of the market that declined significantly on January 17th? Just buy real bitcoin and altcoins then sell it at the peak after few days/weeks. If you have enough money, just bet on bitcoin futures which provided by cmc trading group or other companies.

Well, bitcoin price fell to $9900 a few hours ago and that was the chance for everyone to buy cheaper bitcoin, even for now bitcoin still on discount time as long as it still below $13K as the new level of price for bitcoin in the last few weeks.
The biggest problem why bitcoin losing its value because the usability which fades away due to scale problem remains unsolved that cause too many unconfirmed transactions and we have to pay ridiculously high fees to pass the long queue.

I have never tried it before, but I thought google authenticator can be re-install on another phone, then access your GA by submitting the email, password and verification code. If the new Google Authenticator you have installed has not been linked to your Google account with two-step verification, you can not use it.
Here some sources.
https://support.google.com/accounts/answer/1188780?vid=0-694078363559-1516283000915
If you lose your phones or otherwise can't get codes via text, voice call, or Google Authenticator, you can use backup codes to sign in. Follow the instructions below to generate backup codes. If you don't have your security key, you can also use these codes to sign in.
The codes come in sets of 10, and you can generate a new set at any point, automatically making the old set inactive. In addition, after you’ve used a backup code to sign in, it will become inactive.
https://support.google.com/accounts/answer/1187538?vid=0-694078363559-1516283000915

Indeed, there are some problems regarding blockchain.info lately which indicates the developers have to solve those problems as fast as possible, but I prefer not to use this wallet for the daily transaction or not use it at all, electrum wallet works just fine all the time since I've been using it for months after left blockchain.info for good.
If it just a bug on their system, it will be fixed without you have to do anything, but this kind of problem is annoying for people who need to access their coins immediately.

Just learning about the idea of Lunyr project, it seems interesting to develop a resource of crowdsourced encyclopedia for reliable and accurate information, moreover, we can contribute by writing or peer reviewing articles. But the most amazing thing is decentralized applications in Artificial Intelligence, Virtual Reality and, Augmented Reality as the next stage of Lunyr development, may I ask how far the development of these apps right now? whether it has started like 30% - 50% or not yet?

China is an outdated news imo, but South Korea ban cryptocurrency trading is just a FUD news as President of SK stated there won't be a ban on cryptocurrency.
On the other hand, an article explaining why this is happening because bitcoin futures contract that expired on January 17th. Some people who hold the contracts bet on a lower price, they can manipulate the price by selling bitcoin which they have bought it in December 2017. But, it will recover soon as we are entering January 18th, look at the market prices right now, slowly increases again.

The cause of today's chaos is likely large hedge funds using expiring BTC futures contracts as safety nets to exploit the only sure-thing in this market: a large amount of new/overextended investors who are easily moved to panic sell during a flash-crash.
On December 10, BTC futures trading went live. The first set of those contracts is set to expire tomorrow, January 17.
http://telegra.ph/Possible-Rektage-explanation-01-17

Most cryptocurrencies prices are declined in mid-January, there are some factors behind it including bitcoin futures contract that come to the end of the date on January 17th but considers it as a good thing due to we can buy cheaper coins at the moment. Hence, we need correction as an opportunity for new adopters to invest in cryptocurrencies as well. In fact, we may won't find such prices in the nearly future after bitcoin get into "bulls run mode".

Too many new customers want to register right now due to the cryptocurrencies price spike.
Exchanges developers have to do this to ensure the capability to handle the demand for good service and maintain their network, including answering tickets.
Fortunately, I have registered on binance, but I'm not so active not using it for trading. But, it's a good thing to have more than 1 option to trade cryptocurrencies.

Indeed, the more you put, the more you get by the end of the day.
But the problem is; whether you can be patient and wait for an uncertain time until the prices reach a higher point to extract the profits, especially at the moment where most of the coins seem in the bloodbath.
It's a good time to buy cheaper coins in the dip, that's why do not put all of your funds at once in a coin, just invest partially. Deposit fiat currency, buy bitcoin and altcoins, waiting for a month and then you will get more than 100% profits for sure.

Most people will do the same thing.
If it's open source and people can check it on Github, which mean you get +1. People will trust it after some people give their reviews about this decentralized exchange.

As long as the exchange offer low fees for withdrawal and enable custom fees to send cryptocurrencies according to the recommended fees, it will be a good thing.

If I have tech skills, of course I would like to join if there is a chance to do this.

Mid of January become the day of correction after the bulls run and seem like bitcoin will recover by the end of January or in February such as happened in 2017 where bitcoin increases slowly over time. The cycle always repeated, maybe someone or a group of whales always do the same thing in the mid of January, to cash-out at the moment to give an opportunity for new adopters to enter the market at a lower price. Honestly, it's a good thing as most altcoins declined as well, buy more coins in the dip and sell at the peak.

I have a transaction that stuck for over a month, simply because of the low fee as well. Since the mempool get flooded with too many unconfirmed transactions, there is nothing we can do about it but pay higher fees.
Not sure if we blaming core developers for all of this problems, whether bigger blocks is the answer such as BCH.
But, we have segwit as a temporary solution for scale problem, it just most of the bitcoin users do not use it in the daily transaction, especially for exchanges which has the biggest trading volume.

Withdrawal fee for an exchange is always higher than required fee, to ensure your transaction will be confirmed and they will take the rest of it, that's why it's called fee
it is not only Yobit obviously, most exchanges have set withdrawal fee higher, but $1 or $0.5 isn't expensive at all, depends on how much Doge do you have?
There are many exchanges around, why do you choose Yobit? there is some problem regarding their services and too many people complaints about it.

Yeah, they do not plan to build an exchange, instead, they want to create a cryptocurrency called "MUFG Coin" worth at around JP¥1, the idea is similar with USDT (tether)
The article clearly mentioned this:
Needles to say, while MUFG only envisions its coin used to make stable transactions in Japan, once the cryptocurrency will be out in the wild global traders can use it for other uses as well. One interesting application is for it to be used in trading pairs on non-fiat exchanges instead of USTD, backed by the largest bank in Japan instead of Tether.
Then, they will offer a service called bitcoin segregated accounts that will be linked to exchanges, I believe they will use MUFG Coin to do this in order to avoid if the trading company is hacked or goes bankrupt.

Finally, the correction has come?
I get used to higher price and then it just declined significantly over $2500 within a day.
Maybe it's the time for big whales to cash-out due to some fud news from South Korea and other countries.
However, there is nothing to do about it, take it as a discount time to buy more altcoins, especially for some potential coins which on the bulls run recently.

Seems like you were exaggerating this news, Kraken was not hacked. You should have some proofs before saying such allegations.
Look at Kraken site now, they even offer free trading fee until the end of the month, everyone have a chance to withdraw their funds now, or just continue their trading activity without have to pay fees.
Kraken surely noticed its users upset over the downtime, especially when markets have been extremely bearish so the company apologized for the downtime. For this reason from now and until January 31, the trading platform is giving customers zero fees for all unleveraged trades until January 31, 2018 (UTC). Additionally, the exchange is reducing margin position fees to 0.005 percent until the end of the month as well.
https://news.bitcoin.com/kraken-exchange-returns-after-longest-downtime-since-2013/

If you have the big capital to trade, scalping is the easiest and faster way to generate profits in trading as most cryptocurrencies fluctuate in minutes.
But, if you don't, just waiting for long-term like weeks or months for the coins to gain more value and then sell it, in most case; people waiting for months for new coins to reach a higher price. But in general, if you can't wait for months, some coins prices such as eth, ltc, dash, xmr, xrp can increases within days or weeks which make you can extract the profits.

LoL, don't you read some posts above yours? You should know better.
Coinbase ever mentioned about it; if you send bitcoin to bcash address, it's gone for good. They are busy with so many tickets submitted every day by millions of users, and more likely won't answer a ticket about people who made such mistake.
Or else, Coinbase will reply your ticket with this:
"Unfortunately, digital currency transactions using most blockchains are irreversible, meaning once they are sent there is no way to reclaim funds. If you sent digital currency from your Coinbase account to an email address by accident, your funds will be returned to you in 30 days if the funds remain unclaimed. If the email address has not already been claimed, you could do so to ensure the funds are returned to you."

It's an old story which repeated, again and again, BI clearly stated that bitcoin isn't a legal currency to do transactions. Hence, people just trade it on exchanges.
Bitcoin can't state as currency in Indonesia at this point due to some commons problems.
People will start to worry if the government will regulate to ban cryptocurrency trading and ban exchanges.

Cash out for fiat currency when you can not wait for the cryptocurrency to recover, bitcoin and most of the altcoins will likely to recover within days or weeks.
Get out isn't a good way in this case as fluctuation is a normal thing in crypto-market, just watch over the latest news of bitcoin in some countries.

Yes, you can allocate your funds to some potential altcoins such as bcash, ethereum, monero or some cheaper coins such as waves, iota, aion, xrp or xlm and much more.

For real hodlers, it's the best way due to bitcoin will regain its value and tend to rise over time, bitcoin won't let you down as long as you can be patient for the storm to pass.