Quote from: BitUsher on November 03, 2014, 03:04:57 PM

Quote from: Tammy Chan on November 03, 2014, 02:09:38 PM

The price 0.001 btc / GHS sounds a bit too good to be true IMHO. You'd better be careful before buying hashrate from it.

Whether it is a scam or not is moot as the user will still end up losing money.

20% average difficulty increase is a good estimate.

https://bitcoinwisdom.com/bitcoin/calculator

IMO, 20% was a good estimate for the period before June 2014.
But the difficulty increase has slowed down since then. The increase rates from July 2014 onwards are 3.08%, 8.08%, 5.30%, 20.86%, 15.03%, 8.75%, 16.20%, 0.98% and 2.81% according to https://bitcoinwisdom.com/bitcoin/difficulty

Will it speed up once again? May be. Will it go back up to 20% every 12 days? May be.
But it is hard to predict.