Maybe some of you already know about this site but I just ran across it and thought it was pretty useful.
It is a website/youtube link where you can see photos of the individual campsites at a large number of campgrounds - lots of state parks, etc.
They've got at least 260 campgrounds from all over the country there and you can search by state, etc.
Really handy for seeing the site you are considering when making reservation or just planning a trip.
Check it out:
campsitephotosdotcom - YouTube
or you can go to the website:
Campsite Photos, Camping Pictures, and Campground Reviews - campsitephotos.com