Recently i took part in couple of bounty campaigns,and i though i can earn some decent amount through it...but it was a total waste...i took part in targetcoin and coss ico campaign and after 2-3 months i recieved the bounty which is worth only about 8 USD including both

it was just total waste of effort and time
Please understand that joining campaign that pays tokens/altcoins is really a risk and gamble about the actual price. We all know and we can't assume the price of each token offers in ICO until it becomes available thru different exchanges. That's why we really need to study and research if the ICO project you have joined in will have impact to the market after it's been released.