Every time I take part in a project I will see first is a very important concept and well written funding. the best is that we have to choose the manager with the highest trust
So sad since there is almost none of reputable manager manage altcoin bounty campaign. I have seen yahoo, hampuz managed few of altcoin bounty but it seems those bounties have been ended.
sometimes even if you join in a campaign under a trusted manager doesnt mean that you will still get your bounty. Still depends on the project and mostly successful projects these days are conducting their IEO in a famous exchange.
It's much safer actually.