Just a heads up: There's a chance that some people might've requested a username change for privacy purposes, and such threads kind of defeats the purpose of the name change.
If not for this thread I wouldn't have known that
Murat was
iwantapony. I know I came across that user's posts a great deal when I started newly here but all of a sudden I couldn't find them again. I concluded the user had stopped posting; not knowing they only changed identity. However, if I may ask what security or privacy reason would make anyone change username when this is just an online forum. We don't even have a physical presence. I don't see any cogent reason for that. If it were for a reason to brand or rebrand their businesses, then we could say yes they've a reason for that. Otherwise, I wouldn't take the privacy or security angle to mean anything. Do people truly get scared online when they haven't done any wrong?