As a follow up to the post on Nick’s excellent post on Folksonomies, here are some additional notes on sites that use tags to organize information.
Tagsurf – In the tagging spirit of Flickr and Del.icio.us, Tagsurf is an online message board which uses tags to help organize subjects instead of threads or channels. Currently in “Alpha” but seems to be picking up steam. Definitely worth checking out.
Furl – I list this one because Technorati tag search results are now pulling tag data from Del.icio.us and Furl. Furl allows you to archive web pages and provides up to 5 gigabytes of storage. Your collections of archived pages can be private or public and you can “share” ie promote, your archived pages via email or RSS feed. And, uh, it’s part of Looksmart.