From the previous threads, this one seams to be the only what that is entirely FREE. Most of the other applications have only free trial periods and then are required to pay $25-35 for the full application.
There are a couple sites that I get recipes from... but I've also got a collection of recipes that I use. I usually cook with my AlBook sitting open on the counter connected to my Airport Express so I'm always online. But I do have a few favorites that in various places.