joshi tm: emmett makes a very good point. The list of fellowships is cumbersome, and in dire need of revamping. I've tried myself a few times to go through it to find those that might be interesting, but I got very frustrated after a few pages. Many are dormant, if not downright dead, and should be deleted or archived. Sure, it's a big cleanup job, but it should be done for the benefit of the membership.

Listing by size would not be of any particular use. Most of the active ones have enough incentive to swell their ranks as it is, and some are deliberately small yet vibrant.