If you use firefox as your browser, I can highly recommend the "StumbleUpon" extension for finding really interesting stuff on the web that you wouldn't otherwise find.
It allows you to specify a range on interests, you then click on the "Stumble" button and it randomly takes you to a website. If you like it, click on a button and it saves the link against your account (so you can easily find it later).
Stumble also allows you to see the stumbles of other users that like the same sites that you like.
Certainly worth a look.