Most of these social software technologies, at least the ones we set up, use tags (think tag clouds), folksonomies, taxonomies, , voting, reviews, recommendations, and search. This makes it quick and easy for experts as well as cross-collaboration teams to quickly and easily filter through ideas.
"Dave Weinberger Interview - Everything is Miscellaneous" from Kathleen Gilroy
Podcast interview with Dave about his new book. It is a deep look at why things are unfolding in new and surprising ways on the web.
From, Dave's blog...
drupal website application development km dave weinberger social media software everything is misc. tags taxonomySocial Media Tools drupal website application development mashups tags taxonomy rss xml tagging folksonomy microformats classification api's