Did you know that the DEN has a Diigo group to share great online tools and websites?  Diigo is a social networking site, like Del.icio.us, where users can bookmark websites for all in the group to benefit from.  Some recent finds include PicLits, NASA Do-it-Yourself Podcasts, and Make a Gif.  Join the group!  You can receive email alerts to let you know the most recent sites that were added if you want to.