From what I understand, 51%'ing a network does no harm unless the pool operator has bad intentions.
Why risk it though? What does ghash.io give you that BTCGuild or eligius doesnt?
Compared to BTCGuild: 0% fees
Compared to Eligius: less variance
I started mining with them around 3am UK time on 03.01.2014, so in about 1 hour that will be exactly 1 week mining.
My average hashrate is 3200GH/s.
For that 1 week period I have mined 8.54603089BTC exactly (not counting the last 1 hour of the full 1 week), while the calculator says 7.94166635 BTC per week.
So (8.54603089/7.94166635)*100 = 107.6% luck
So all looks good.
that's a bit greedy.. you'd rather risk the bitcoin network and go against Shatoshi Nakamoto's design just for a little extra coins.
even ghash.io has admitted that they are a threat to the bitcoin network and will make good... but still there are a few people that just don't care
Ghash.io is far from having 50% of the network, but yet people freak out.
Obviously it is impossible to predict their exact share as this is based on previously solved blocks and luck, but roughly it is around 40% currently, which is far from 50%.
According to http://bitcoincharts.com/markets/ total hashrate is close to 16PH/s
Ghash.io has 4.7PH/s
That's less than 30%
If they get really close to 50% then I will surely move out.
I hope you hold up to your word. Any way you seem to be doing well your 3TH plus mining farm
the reason they fell back from 42% to now 39% is because there's been a few miners pulling out for the reason of protecting the bitcoin network.