Clickprint – Derived from the amount of time that a user spends on a web site and the number of pages viewed. The combination is a unique fingerprint that can help a site owner identify return visitors, curb fraud and upset the user with invasive marketing. Yahoo! used to analyse over ten terabytes of data every day with former rocket scientists like Usama Fayyad.
Collabulary – A vocabulary for the collaborative tagging of web content. The flexibility of folksonomy and some of the structure (through common language) of a taxonomy.
Thanks to Wired Magazine.