Prepare yourself for Streakr.com, a “web discovery tool and social networking site” that has just entered public beta (read “we’ll let people in but don’t blame us if it stops working”).

It appears to be Facebook meets MySpace meets Digg meets StumbleUpon meets… another irritating browser toolbar.

The system works once you embed the Streakr toolbar in your web browser, which you then use to rate sites with a ‘thumbs up’ or ‘thumbs down’. This links them to a personal profile page, and allows them to be shared on the social network.