I’m starting a new series called “This Week’s Best Stumble.” And the first in the series is, you guessed it, StumbleUpon itself!

If you don’t use SU, start. But I will warn you: it’s incredibly addicting. So addicting, in fact, that I barely watch TV or check social networking sites anymore in favor of Stumbling. It’s just that good.

The premise is simple: you register, input a list of your interests, download a no-frills toolbar to your browser, and click Stumble! SU then takes you to a random internet site having to do with one of your interests.

I think of it as a personal Google. Instead of compiling the most important information around a specific search term; it lines up relevant websites that it predicts you will enjoy.

And believe me, whatever algorithm they’re using, it’s spot-on.

In typical Web 2.0 fashion, the SU geeks have built a community component into their software as well. You can “friend” fellow Stumblers, and send them links to pages you believe they will enjoy.

SU also allows comments for any website indexed in their database. If you want to check out the reviews of your (or any) website, just go to www.stumbleupon.com/url/*website* where *website* is the url of the site you want to see.

Be sure not to overlook what people are saying about your site.

Next week I’ll post the best Stumble I’ve found to date. Feel free to link to any good ones you find in the comments.

P.S. My SU homepage is here. Take a look at what I’ve liked, and friend me!

Happy Stumbling!