After the hard fork on Aug 1, 2017 both Bitcoin and Bitcoin Cash had the same difficulty. Due to the EDA built in to the Bitcoin ABC client difficulty on the Bitcoin Cash chain quickly ramped down to 144323701657.02 or 17% of Bitcoin current difficulty. The value will be even less when Bitcoin difficulty adjusts up in a few days. Once difficulty on the Bitcoin Cash chain drops to less than 8% of Bitcoin difficulty miners will be incentivized to switch mining to the Bitcoin Cash chain. How can Bitcoin Core prevent miners from switching en masse to mining the Bitcoin Cash chain?

Shorting a bull market is tricky and one way novice traders lose money. It is easier to make money just going long in a bull market. If you look at a weekly Bitstamp chart for BTC/USD with a simple 20 period moving average bitcoin price has been above the 20 MA for two years. That is two years of a bull market where all you had to do to make money with bitcoin was buy when price touched a line on a chart, the 20 MA. Last time was last month when you should have bought under $1900.  

Fibonacci retracements and extensions are based on the Fibonacci sequence of numbers. The Golden Ratio 1.618 is found everywhere in nature and also bitcoin charts. Traders have been using Fibonacci for decades because it has been shown to work with markets. Back in January 2015 since I knew the bitcoin low was $152 at that time and the previous ATH was $1163 I could predict a possible future bitcoin price of $2798 from the 2.618 Fibonacci extension. Do you see how Fibonacci can be useful now? In this case it could have helped a smart trader avoid taking profits too early.

Subtract the price at swing low $1830 from previous swing high $2980 to get $1150. Multiply $1150 by 1.618 to get $1860.7. Add that $1860.7 to the $1830 low to get the 1.618 first Fibonacci extension of $3690.7 then repeat for the higher extensions.

Hope this helps. Fibonacci extensions drawn from most recent swing high to swing low.

Watch $3690 level plus or minus 5%. Important resistance expect a pause or profit taking.

$3690 is a 1.618 Fibonacci extension a logical price for a pause or profit taking.

I think Roger Ver still has a fortune in bitcoin left and except to help the fork get started would never sell all BTC for BCC. He is a smart businessman. Once BCC price is below 0.05 BTC he will start buying, increasing buys exponentially as cross rate drops. That would be the smart thing to do. He would not go all in until BCC looks on verge of taking over from BTC and we are early days yet. That's my opinion anyways but you know what they say about opinions.

Interesting article on possible Bitfinex price spoofing.

I think the miner that mined a block with one tx did so to prevent the difficulty from starting to adjust downward again. When the miners are ready to have difficulty reset they will coordinate and you won't see any blocks for a twelve hour period. Then BCH mining difficulty will start ratcheting down to the point mining BCH may be as profitable as bitcoin even at the reduced BCH price. They might wait 7 days until bitcoin difficulty retargets.

Hold on to the BCH you got airdropped. If BCH gets down to 0.05 bitcoin start buying with both hands. I expect a hard floor at $100.

The client refers to Bitcoin Cash as BCC and the first company to have a mining pool (ViaBTC) does also. It seems the exchanges are mostly going with BCH while the client and ViaBTC are staying with BCC. They are assuming Bitcoin Cash will win out over Bitcoin and they may call Bitcoin Cash what they like. That remains to be seen still early days but what Jihan Wu wants he seems to get in the end. It was a really bad idea to let bitcoin mining get centralized in China but water over the dam.

Depends on your definition of profitable. If we are talking bitcoin the most profitable cloud mining outfit is pool.viabtc.com in China. They charge $159 per TH/s for lifetime cloud mining using S9s. They have the lowest fees in the industry, such as it is, but one TH will pay you daily after fees average $0.65 (I have one.) That would be 8 months to ROI without price or difficulty increase. More like a full year. They also offer BCC cloud mining, which definitely is not profitable at the moment. You see a lot of shills for pool.bitcoin.com which is also pushing cloud mining; they have higher fees than ViaBTC so are not as profitable. Not surprising since their mining farms are in the US where power is more expensive. Both of those outfits are more profitable than Genesis Mining which has even higher daily fees.

If you want to play with cloud mining buy a TH or two at ViaBTC. You can switch from BTC to BCC if you like. However, if you are serious about making money mining you should be putting a GPU rig together and mining Ether at home. Here is a guide and good luck as many other people had the same idea and GPU video cards are hard to find.

@cashodler brings up some valid points. Coinbase changing their stance on BCC was important. It is still early days. John Stuart Millibit wrote an article that laid out a scenario where BCC could take over from BTC in a matter of days, possibly in November if the 2 MB hard fork in SegWit2X is not honoured. Don't forget mining is still centralized in China which means to a large degree what Jihan Wu wants he gets. Smart investors do not bury their heads in the sand but gather information on both sides so they can make informed decisions. 

Best is to use the full node Bitcoin ABC client if you have room for the blockchain. Be careful though, if you have Bitcoin Core already installed on the same machine Bitcoin ABC will overwrite it.

I agree with you but the million dollar question is when would it be advisable to start selling BTC for BCH? When hash power directed at BCH is greater than say 25%? There should be a metric to follow that is a leading indicator of future success of BCH.

I noticed the difficulty adjust kicked in at 478577 and is now down to 225505642691.99. We are at block 478599 and the difficulty is constant. Is there a set number of blocks before difficulty begins increasing again or does it depend on hashpower?

Check /r/Trezor.

To get the maximum BCH for your BTC you can't send any bitcoin from your Electrum wallet.

Breadwallet has hinted they may support BCH probably with a different wallet app