trust system is not moderated so nobody can help you out apart from the person who left the feedback on his account.
a feedback from a newbie, throwaway account doesn't matter to anyone.

also there is a button at the bottom left side of this page called move topic, click it and move it to meta or reputation board.

Chinese are mostly interested in trading only.
and these things don't exactly have a time, it is adoption, so it takes time first, and by that period of time everything is slow, then suddenly things will speed up. it can take years to reach that stage but when it is reached you see in a couple of months that bitcoin and then cryptocurrencies are massively used.

a bubble first has to shape up and then pop. you have not yet seen a bubble my friend.
today it seems like a lot of new money came into the market and cause some rising. probably it is partly because of all the dumps in the altcoin market and the fact that traders are leaving that market to come back to bitcoin.

that is why everyone keeps repeating an unconfirmed transaction is not trusted.

and besides it is spending an unconfirmed output which means the second one is never going to confirm either until the first output is confirmed!

there is a good tool from blockcypher which gives you a good risk factor, check it out:
https://live.blockcypher.com/btc/tx/6c99d818218f3486e02399f9facc34e69e44b37ce01b025016624c7bf107a612/

the important thing about 51% attack is that this kind of attack should be performed for profit not just randomly making a fork and orphaning the 49%!

this means you spend a large amount of bitcoin (for example sell 1000BTC in block 40001) and take the fiat then with >51% start building on top of block 40000 instead and with having more hash power try making your new chain the longest chain and spend the 1000BTC again in the new block 40001.

the solution is not that complicated either. when you receive a large amount of bitcion (ie 1000BTC) you have to wait for more confirmation. in other words wait until it is deep enough. double spending after block 40002 is harder than after 40001 and 40003 even harder and 40010 even more and eventually it becomes practically impossible.

i wouldn't put too much faith in the current resistances at this point. a lot of things can change that can cause bitcoin price to go in either direction. there is a speculation saying this price rise was because of news about ETF reconsideration, and if so and if it is rejected again price will go down no matter the resistance.

i don't remember anybody "preventing" anything with GHash.IO!
if my memory serves it was like this, GHash.io had more than 51% hashrate (it was about 60 i think this was a mistake) for sometime, and someday someone realized this and said oh shit there is a possibility of 51% attack!
then since they were a mining pool apart from having GHS themselves, some miners moved to other pools and the percentage came down.

edit: there you go, from 2014:

and just FYI, nothing bad ever happened. someone having high hash power doesn't mean they are going to double spend.

but there should be a point when you stop or slow down gambling.
lets say you are making bets with a 2BTC bank roll and price is $500 so you are taking a $1000 risk by gambling and your loss can potentially be maximum of $1000.

now lets say price went up to $5000 and you (based on what you said) still have the same bankroll. that means you are taking a $10,000 risk.

are you still willing to do it?

step 1. understand what bitcoin is yourself.
i don't mean the technical stuff. just the basics of how bitcoin works, which wallet to choose, how to make a cold storage to hold coins for long, what is transaction fee and how it is calculated (even something as simple as knowing fee is not based on amount or fixed per transaction but based on size in bytes).

step 2. decide which aspect of bitcoin is good for you or the person you want to introduce it to.
- currency: so just introduce them to shops they can spend their bitcoin. tell them about gyft or similar sites and show they how much money they can save this way by using bitcoin. show them all the benefits of bitcoin.
- investment: show them a chart, also don't forget about the fact that there is only 21 million coins as max amount and there isn't enough for everyone!

step 3. don't forget that bitcoin is just money and not magic.
this means bitcoin is not going to make you rich overnight. and if someone is mistakenly thinking that way they have to stop.

well in the early days price went from $200 to $1200 in about a month that is 500% rise. that is enough profit to drive anybody insane! so people started saying things like $10K on the way (there are still articles of it on coindesk).

but for the past couple of years price has been rising slowly and with more sensible speed that people brought down their %% to a normal level and now call $5000 based on that speed.

bitcointalk.org and it is an awesome forum

go to lending board and see what others are doing, you can start a topic there and put your offers up. be careful though there are scammers who will scam you for less than 1 dollar!

also make sure to read the sticky topics.

i don't think saying "a lot of people" is correct in case of USDT. many didn't even know it existed, many thought it was USD and a lot of people stayed away because it is a centralized altcoin with no promises whatsoever.

and besides after the first dip to below $1, back when bitfinex was hacked, people lost faith in this coin. and now we are seeing they were right to do so.

LOL, looks like someone sold his coins too soon and now is crying

to OP:
no bitcoin price will never ever crash. it will however correct itself. this means after the fast price rise like this, there will be some sells leading to price coming down. it would be hard to say what price and when but it certainly wouldn't be what this panic seller i quoted said.

going back to $1000 is possible but the possibility is too small that it is negligible. even if there are some bad news on top and whales dump price will go down to $1300 range and with a bigger sell pressure we may get lucky and see the $1200 range again but don't get your hopes up for $1200 or anything lower again. the chances are nearly zero.

the Japan thing was on a massive scale, and also Japan is usually important in technology stuff
and also we have a history with Japan and bitcoin with the big Mt Gox scam that took place in Japan and it was great to see them come back and be this positive towards bitcoin. that is mostly the reason for all the attention to Japan news.

they can try till the end of the universe to find a lost private key and still not succeed. and unless some day someone finds an impossible weakness in ECDSA or there was a gigantic revolution in computing power this won't change!

a proper mixer won't just give you the coins they got from someone else, that would be stupid!
what happens is that when you make a deposit in a bitcoin address that a mixer gives you that money goes into a pool. pool of all the bitcoins they received and it gets mixed, there should be a lot of transactions in this and then your "literary mixed coins" come out from a new transaction to another person.
and it would be extremely hard and nearly impossible to prove these coins were ever used for whatever reason they were used for before

you can always open up a service like topic in bitcoin-related forums and advertise your services (if you are good) and give some examples of your work. if there were somebody out there they can contact you.

start with services board on this forum and also on reddit (i think the sub was called /r/jobs4bitcoin or something similar)

i have always found the term "average Joe" funny in most cases. and if you think about it, who is an "average Joe". at this day and age it really doesn't matter in my opinion. anybody who is capable of connecting to internet and opening up google.com is capable of doing anything. specially things so common as making a bitcoin wallet and creating a backup from. there are a lot of walkthroughs everywhere.

bitcoinwisdom is not an exchange platform. it is just showing some charts that it gets from these exchanges for a quick and easy view of the charts without needing to log in any of them.
and for analysis it is best to use a proper chart (either bitcoin wisdom or the exchange itself, bittrex has good charts). coinmarketcap charts are terrible.

number of people quoting bitcoin price versus dollar from poloniex has reached an ATH and i don't even know why!
because if any of you who are quoting bitcoin price from poloniex have ever traded in that exchange or bothered to pay a little more attention to details you would have noticed it is not dollar value that you are quoting!