There are many popular sites are available like Bountyhive,Bountylord that gives the ICOs announcement their duration time etc.
I want to know that how you select an ICOs to either participate in it as invester or a bounty campaigner.
You have no choice than to be selective with choosing ICOs either for contribution or for bounty participation. These bounty sites gives numerous ICOs it now balls down to individual participants to go ahead to carry out research in order to ascertain the potential of the success of the ICO.