How To Value a Twitter Account

Are you considering selling your Twitter account? Well I have not seen one on eBay just yet. But an interesting question was posed by @BrentCsutoras, an Internet Marketing consultant. He asked, "If you could... What would you pay for a Top 100 Twitter account with over 14,000 followers?".

This posed an interesting dilemma. There has not been any precedence set on this that I am aware of. I know a while back someone sold the rights to advertise on their Twitter background on eBay.

How should one determine the value of a Twitter account? Using Twitterholic as your gauge as to whether or not the account is deemed "authoritative" could be a good start. But I see flaws in Twitterholic, no offense to @gavin and @alexrudoff. Take the number one spot for example, @barackobama. Now Barack has over 165K followers and he is following 170K, but has not posted a Tweet in over 60 days. Should we still consider Barack an active influential user of Twitter?

Should we just go by the shear number of Followers? Probably not. I think that the ratio of Followers to Following should be a benchmark. You would even have to weigh the Followers as well. Somewhat similar to authoritative back links. Some Followers have more credibility then others.

Should the number of ReTweets a person receives be a factor as well. Retweetrank and Most ReTweeted could be incorporated into the mix.

Finally, is there really a market for reselling your Twitter account? What are your thoughts?