I've often thought something like this would be useful, but I'm missing a few things (and you have a bug, I can't leave my e-mail blank because it says that e-mial is already taken).

1 - I can't figure out how to add a bookmarklet. I can only add you page 2) I wouldn't go to a page to enter in the sites to save, that is too much of a pain in the ass - a browser plug-in would be much better.