Numbers in Web 2.0 Tags

TagMan doesn't use a database. Its "database" of answers is the universe of popular tags from a handful of web 2.0 sites. Using the Web as Platform definition of web 2.0, is TagMan itself a web 2.0 app or is it really meta web 2.0? Regardless, I noticed today that many tags that Flickr TagMan and Technorati TagMan use have numbers as well as letters in them. So, be sure to guess numbers as well as letters. Here are a few examples from each site:

Technorati: blogday2006, mp3, web-20, web2.0

Flickr: bokehsoniceaugust30, n73, fz30, e500, greenbelt2006, foocamp06, exposure082506, readingfestival2006, pax06

So, play a game and if you're stuck, guess a number. ;-)