The first thing when you want to decide to join a bounty campaign then you must understand the ICO that you will follow in depth. You must understand the ICO project clearly so that you cannot take part in the ICO for speculative reasons only. You also should not follow the ICO if you only follow the issues that most people bring. One more time if you were a victim of a scam ICO then you could give a red mark on who the ICO developer is so that when you come forward to find an ICO that one of the developers is that person again then you need to be careful.