Hello there!
Right, the joke site: It's alright. I've seen better designed joke sites, but I've also seen worse.
The recipe site: Looks great to me. "Cousines" should actually read "Cuisines"

Also, I think the images of the dishes should be clickable links to the relevant pages but otherwise, good job!
The social networking site: Ok, the flashy frontend is all very nice, extremely colourful, and it looks like a lot of work has gone into its design - down to the shimmer on the guys glasses (which is a nice touch), and I am particularly taken with the pretty lady at the front...
However, in my humble opinion, it just seems like overkill considering it's a social networking site.