I love Pinterest - I think I may have already said this once or twice ;) - It is so visual and I find I am actually using the ideas I "pin." I think one of the other great things about it is I don't necessarily need to follow the site or blog the ideas came from - they are just one idea I like - so pinning them is the answer. I have a great board just for bookmark ideas that I use every month for our "Bookmark of the Month" project in the library - kids come to the library at lunch and make a bookmark. The stamped paint chips from the hardware store were a huge hit.
Someone else was wondering about educational applications for Pinterest and I use it to save lots of ideas for my classroom and courses. Here is a great article to support this:
5 Tips For Using Pinterest In Your Classroom | Edudemic