Interesting topic because I just visited this site not too long ago:
Former Child Star Central
From the looks of it, it seems pretty up-to-date.
Some of the more interesting things I read:
- Jaimee Foxworth, the girl who played Judy in 'Family Matters' who was suddenly written off the show -- is a full fledged PORN STAR now
- Brandon Call (JT from Step by Step) works at his parents gas station and was wounded in a gun fight
- Chad Allen recently came out of the closet
- Danny Pintauro (Jonathan, Who's the Boss) also out of the closet
- Danica McKellar (ADPi) holds a degree in math from UCLA -- coauthored "Percolation and Gibbs State Multiplicity for Ferromagnetic Ashkin-Teller Models in Two Dimensions"
And from what I read on GC and official Alpha Phi sites, Jodie Sweetin is an Alpha Phi from their Chapman University chapter. No one seems to know what happened to the boys who played Jesse and Becky's twins.

'Kimmy Gibler' went to Whittier College, got married recently and is grad school bound. She was a member of the Palmer Society, Whittier's equivalent to a sorority.
The site has former child stars dating back to the 60s. It was great reading about the stars from all the 80s shows I used to watch: Small Wonder, Kate & Allie, Facts of Life, Our House, The Hogan Family, Who's the Boss, Head of the Class... ENJOY!