They are not always total waste. What you have to offer is what is most important with these bounties. First for a signature campaign, you are a Junior member or was then a newbie looking at activity you have presently, so what do you expect. The same COSS you just complained about is what I got about $580 for just twitter campaign. You dont have to do everything, you just have to be smart. Work on building original twitter followers or work on ranking up as a member on the forum, or possibly even facebook followers. Probably you just did not have enough to earn much or there are some things you did not just do well.