In just a few short months, the value of a Twitter user has gone up over 1,200 percent, according to completely arbitrary and illogical calculations. I initially pegged it at around $1 based on the value buyers were willing to pay for Andrew Baron's Twitter account at auction. When Twitter received $15 million in funding, it worked out to around $7.50 per user. Looking at potential revenues, advertising strategist Ben Kunz pegs it at $12.26, based on 2.3 million users, industry averages for cost-per-click ad revenue, and ten ads per user per day. Of course, since Twitter CEO Jack Dorsey has declared Twitter.com an ad-free zone, and many Twitter users get messages by means other than the site, the actual revenue-per-user number hovers under zero.