well i did not see anything written about farming the bitcointalk accounts, i know some people do it and earn money from that, i think its the best way to earn after sig campaigns
if by farming account you mean spamming with multiple accounts in signature campaigns, i'd say don't worry about it they all will get banned eventually.but there are people who buy bitcointalk accounts with or without potential activity and sell them later with higher price, and earn a nice profit through that.
Farming accounts isn't really worth it any more due to the low prices accounts get, but you can have as many accounts as you want as long as you don't spam rubbish from them. Probably best just to have a few and make decent posts on a signature campaign.
