Group Recipes is a social networking site around food. I've only been on it since last night but I'm already really into it. You can share recipes or restaurant reviews with your friends or search for different food to try.
I can see myself getting a bit addicted to this one. I like to cook and I almost never make the exact same recipe twice (if I do then I know it's good!)
And to top it off the site is very nicely designed.
