Let's keep it fresh.

An O.C. spinoff?? Who woulda thunk?

From thefutoncritic.com:
["The O.C." creator Josh Schwartz] did however indicate there are firm plans to develop a spin-off of "The O.C." itself. Said project would focus on Kaitlin Cooper, the younger sister of Mischa Barton's character, who has rarely been seen or mentioned as of late. It's understood Kaitlin will reappear on "The O.C." later this season or early next season, after which the spin-off will track her exploits at boarding school. It's not clear however if actress Shailene Woodley will reprise her role or if it will be recast for the spin-off, which is being likened to a small screen version of "Mean Girls."

Josh, this is a terrible idea.
1. We don't need to be teaching the 8-18 demographic any more bitchery skills.
2. The diamond in the rough that is your show, Schwartz, is Adam Brody. Without him, your show is nothing.
3. Kaitlin didn't have much of a personality, just like her older sis, Maris.
4. Hell, Kaitlin's not very pretty either.

Hate to be a "mean girl," but if he's really pursuing this idea, he's going to have to replace that Shailene Woodley and immerse Kaitlin into the tumultous world of hormone-dom.