I have FireFox at home and that's what I use. I like it much better than Safari or IE. IE sucks. But I'm a Mac girl. Anywho, since I was already familiar with most of the "tools" on this page, I looked at Digg. This site reminded me of delicious. People linking sites that they find interesting. A difference is that people can "digg" a link, so you can see how popular the site is with users. Here though, I found stuff I actually wanted to look at, like a youtube video of cats doing cute things. I have used the World Cat site for school alot, and for ILL. And I love it! Great catalog, great interface, great refinement tools on the side.