Stumbleupon is a neat site (with a cool Firefox add-on) that enables you to channel surf the web, and find some cool web sites, photos, videos, etc. I use Sumbleupon to find cool new link.
See www.stumbleupon.com where you can join for free (there are just over 2.1 million registered users at the time of writing). You can also download a neat tool bar for Firefox.
One page I've just found, using StumpleUpon is http://www.allmyfaves.com/indexgrad.html. A cool shortcut to all manner of useful sites.