I'm just about to change my username AGAIN! And wondered how often everyone else does?
For the first 10/12 years when we were young and innocent, I had the same user name. Well except for when we did the Secret Santas.
However for the last 5 or so years, I tend to change it every month or so. The main reason is because of security, you don't realise how much personal stuff you give away, even by changing names and ages of kids etc.
So when was the last time you changed?