Moving east from Sycamore Canyon and La Jolla Valley, the next campground I know of is Circle X. It's owned by the National Park Service, since that part is NPS property, confusingly even though there's no National Park in the Santa Monicas. A ranger friend once told me there's over a hundred different public and non-profit agencies who own land in the Santa Monica Mountains National Recreation Area, as it's officially known!
One nice thing about it being a National property is that they have a bigger budget than the cash-strapped State Parks, and so actually have a good map and infomation web page up. The camp site is another group one, for 10 to 75 people. There's water and toilets, and you can drive up to the camp ground. There's also a ranch house that's available for day-use functions, but not overnight.
Some of my favorite trails start nearby; Mishe Mokwa, with its great views of hanging rock, and seasonal springs; the Grotto with some lovely rock-scrambling, and Sandstone Peak, the highest point in the Santa Monicas at 3,111 feet that offers some amazing views.
Funhouse Photo User Count: 747 total, 80 active. Much as before, there seems to be a steady stream of new people adding the app, and a smaller number using it each day. Some questions I'd like to figure out are if new users are arriving via messages sent by their friends, or just spotting it on profiles, and whether people tend to change their photo, or just pick one and leave it. I shall need to do some database-crunching to pull out that information.