This thread is now closed. All usernames are locked in place until September.
I've decided that the old way of users changing their usernames is too much hassle for me. I could set up a system so that mods can change names too, but instead I've come up with a better idea.
Every 3 months, I will set the option that allows all users to change their own usernames. Then I will start a thread here on Meta to publicize it. For the next week or so, all users will be able to change their usernames.
They can then post an answer saying they've changed their name if they wish to. Users can also use the question for polls on a new username if they want to. Remember that you must change your username before the deadline though!
After a week, the thread will be closed and no one will be able to change their username for another 3 months. This solves several problems all at once, including everyone knowing exactly when they can change their username next, and taking a load off myself.
The "open period" will be the first week of every season (Spring/Summer/Autumn/Winter), in other words the first week of March, June, September and December.
Since we are almost at June, I have now opened the username changing period for the summer! This thread serves as the username-changing thread for Summer 2013. Simply go to "My Account" and you can change your username!
Deadline: Sunday 9th June