There is currently a community driven vote to allow people to change their PSN ID
In what seems like the most obvious idea in the world, there is currently a vote to ask Sony to allow gamers to change their PSN ID names. The vote is found on the "share ideas" sectrion of the PlayStation website.
While such a practice could easily be manipulated, it's still an idea that I really wish exsited for every online service out there. While I'm happy with my PSN, Nintendo Network, and Xbox Live usernames, my Steam one was blatanly made in 2006. People cringe when I tell them my account username.
At least it's not as bad as my ancient hotmail e-mail account...