Ways to avoid scams :
1. (good) : Do research about project, their development team, website and about their application in real world before working for them and also read their whitepaper.
2. (better) : Avoid joining bounty campaigns at all

This forum is built with soul purpose of sharing knowledge, updates and experience about crypto world and not with the view of earning through bounty campaigns or promotion.
P.S. Where money is involved, there are scams !