When younare looking for a a trusted bounty campaign, you should read the whitepaper and the roadmap of the ICO project and find what,is gheir goal to become successful at the end of the bounty campaign.
Aside from those, it's the team that is behind the ICO is they key factor to determine if the bounty is trusted or not because they are the once who got the idea, development, marketing and the likes. If at first they are using suspicious name, then you can somehow have a second thought on it and be aware that it can be a scam.