just do the math a guy with 10 account on yobit, can do 0.04 per account every week, so 0.4 with 10 of those spamming 200 post a day, this is a no-brainer, it's highly profitable more than mining or anything else

we are talking about 1.6 btc a month, which is more than a par time nowadays...this can easily be fixed by allowing only 10 members per signature and they must be all hero, this will put a serious deterrent in account farming for the sole purpose of signature