Yesterday Geni.com introduced following to thier site.  Now you can follow profiles that interest you, or other users that you want to see what they have been busy doing on the site. 

Following a profile does a few things:

1. You'll receive updates about the profile on your home page.
2. You'll be added to the list of followers on the profile - this is a great way to find other users interested in the same profiles.
3. The profile will be added to your auto-suggest list, so you can easily find profiles you follow in search, and tag them in documents, discussions, and more.

Also all bookmarked profiles and Geni friends have been moved over to users you are following.