Some more stats for feeds, check out:
Found these via plasticbag.org, from the website:
“Cloudalicious was apparently inspired by the Grafolicious service which tracks changes in the rate of bookmarking for any given URL as well as creating browsable interfaces for getting to grips with tags. Cloudalicious takes this one stage further - showing how the actual tags that people use to describe a given URL change over time. This blurry mess of semantic data is known as a ‘Tag Cloud’.”
This is a great post in describing the way people approach tagging…annotative (like a post it note stuck on the bookmark) or a filing model (placing the bookmark in a folder)….see the picture on this post for a description.