StumbleUpon will roll out a new website, sporting a completely updated interface, geared to be more simple, searchable and social. “Our goal was to make the site and the StumbleUpon Add-on easier to use and more intuitive for visitors and users.  We’ve improved site navigation, and navigation within User Profiles, to make it easier and faster to find what you’re looking for. We also think it just looks a lot nicer,” announced. StumbleUpon says its new features include: search for sites within your own favorites; search your friend’s favorites; improved friend search capabilities; improved site navigation; improved navigation within user profiles