To some (fairly large, in the case of ASCO or ASH or AACR, perhaps smaller for LLS or AHA) degree, the dues-paying professionals in these societies are the crowd. I would say they are a middle ground between something like an experiment.com or similar at one extreme, and NIH (which has inordinate purely political input -- ask your program officer!) at the other.

We shan't discuss scams like Komen here, but genuine research foundations can exist along a continuum.