What is a verified account?
To prevent identity confusion, Twitter is experimenting (beta testing) with a ‘Verified Account’ feature. We’re working to establish authenticity with people who deal with impersonation or identity confusion on a regular basis. Accounts with a Verified are the real thing!
What does it mean?
With this feature, you can easily see which accounts we know are ‘real’ and authentic. That means we’ve been in contact with the person or entity the account is representing and verified that it is approved. (This does not mean we have verified who, exactly, is writing the tweets.)
How to identify a verified account
* The ‘Verified Account’ badge will appear in the top-right portion of a user’s profile page just above the name, location and bio—as shown in the screenshot above. The badge will click-through to this page.
http://twitter.com/help/verified