I don't disagree with what you are doing, bounty programs.

Selling them after listing on the exchanges is a pretty good idea but my strategy is I will not sell them all especially the tokens that I feel will be good tokens in the future. If I will sell tokens that I get from bounty, I often sell 60-70% of it only so that I can get a profit. I will hold the remaining tokens for the mid to long run.

The question is how to increase your tokens?? 2 ways. By joining in bounty program or by buying it on exchanges.