Digg.com + Del.icio.us + Stumbleupon = folkd Rated 4 out of 5 stars

if you don't like your bookmarks, diggs and recomendations to be spread around on various services you might want to use the folkd browser sidebar. it's really handsome and allowes you to find and share the best stuff on the internet with your friends. By using folkd you'll increase your reputation which means that your opinion becomes more valuable.

This review is for a previous version of the add-on (0.50gamma).