Del.icio.us Network Badges
I think one of the important point of web2.0 service, is how you link with other user , how user can be get connected so that they can interact with eachother and provide more variety of content.
Del.icio.us is having the network idea for quite some time, this networkbadges is just in time to let more people get involved , with some of the setting, copy and paste the script , your network status will be display, simple yet powerful . Lets say you saw my blog , think that we might have same topic , add me into your network and share withs my bookmark daily .. ( can’t paste javascript in the post , thats why i take a screen shot )