How do you keep track of your favorite restaurants?

Hey All!
I just joined, and this is my first post :)
 
My list of favorite restaurants is always growing, but I haven't found a great way to keep track of all of them.  My paper lists are inconvenient (and more often then not, I lose them), so I'm looking for an easy and reliable online/mobile tool.  I've checked out a few, but haven't found one I really like :/
 
Do you have any suggestions? I'd love to hear how you all are managing it, thanks!