Notice, there is no other account's activity while one is forging. Coincidence? what is that chance of that? Would 4 people with 4 accounts on 4 different computers willing to fast forge for only 75% BS cost (that is less than 50$/BA, since it's about 200$/BA with single forger.) I'm also not so convinced with the explaination "2 roomate and a friend"... how do you explain the 4th account? Am i missing something?