There are over 5 new bounties added in the forum daily, so there's a lot to choose from. The major challenge is selection of the best bounty to work on. One needs to be mindful of the fact that the project is what determines the profitability of the bounty and as such its wise to review the project before joining the bounty program.
There has been very great tip released by intelligent people on this Forum on how to identify a bad project to a real one, and I am sure that if those tips are being adhered to and followed, it would be quite difficult for any scam project to get my participation.
If we have just like 5 news ICOs that is being released in a day, I dont think to research on those 5 really should take much time, there are just some few things that one needs to verify to be convinced that the project would at least be stabilized and that such project would grow to some extent in future, and one of this things that needs to be checked is the team, the team I very important, any team that does not have a clear background or a successful business past would never be able to successfully carry out any crypto project.