Before participating in a Bounty Campaign always see if the project is doable and can really solve real world problems and if the team behind it is eligible enough to be able to implement and support the said project in the long run. Also see the number of people participating in the Bounty Campaign you want to participate in. Also choose a campaign that suits your time and skill the most, you could choose from, Signature Campaigns, Social Media Campaigns, Translation Campaigns, etc. You could also contact the Campaign manager directly if you have further questions and concerns regarding the said Campaign.