StumbleUpon

Click a button and stumble onto a huge variety of sites that have received a thumbs-up from other Stumblers in one or more categories of your choice, or enter a particular search term in the toolbar's search box and see what comes up. Influence others' meanderings with your own site ratings and tags to help categorize sites.

Note: This link takes you to the vendor's site, where you must register to download the software.

--Erik Larkin