He's unbanned because they delete their IP logs older than 360 days so they had no way of proving "someone else was in control of the account" wrong. Nice job anyway.
Mehh, if it's in 2006, I'm sure after 4 years they would of thought you learned your lesson you had more chance of being unbanned than people who got banned a year ago. Nonetheless, congratulations on your achievement and if the method you used was a specific method that works on any date of botting ban, you should think about selling copies of it for a high price range.