Exclusive: Screen Shots And Feature Overview of Delicious 2.0 Preview Social bookmarking site Delicious launched a limited, invite-only preview of version 2.0 of the service this afternoon. The new site can be accessed at preview.delicious.com, although only invited users can actually get in. The Delicious service (no longer “del.icio.us” and now residing at delicious.com) boasts 3 million registe