It depends. Very good friend of mine got about 80 000$ for 5.5 months bounty compaigns. He worked day by day on 50 compaigns at the same time.
How come he can manage all those 50 campaigns ay the time? He must be a richman by now. He already made bounty a camapaign a serious job.
Maximum I managed is about 25 bounty campaigns at a time and it was like hell managing so much of them.
On the other side my twitter and facebook were like a great spammy one and Twitter suspended my account once and then I had to recover my account by following the process.
That guy might have used more than one account to do the campaigns and he/she must have huge patience level. But I'm wondering about $80k, is that really possible to earn that much in only 5.5 months?