I do not believe that hashrate increase will go on with like 20% each 10 Days, there is a limit to exponential growth. At a certain point hardware becomes to expensive to manufacture and so hardware prices and network hashrate will find a stable top. I think you cant build hardware for much less than maybe 0.002 BTC (or 1 $) for 5 GHS or 0.0004 for 1 GHS.
So if hardware becomes too expensive in comparison to bitcoin difficulty, hasrate will stabilize at a very high top, maybe like 30 or 60 billion. From this point on you´re making constant profits with hardware you already have.
So my pbmining goal is to increase my hashpower until we reach that point. Always assuming that BTC price in fiat wont drop to zero, pbmining is not ponzi and so on...
So be careful with your ROI calculations, youre making assumptions of diff increases nobody can safely predict.
Another thing: I would like to buy piggyback GHS for sha256 altcoins because i think there are some coins worth looking at. Wouldnt that be a nice expansion for pbmining? Why not give that a try? Lets say all the altcoins listed at coinwarz.com.
Interesting Point. There are some Pools which mine always the most profitable Altcoins and change it in BTC automaticly.
I forgot the Name
