Long ago I made this account here, and I've just come back to it, but fancy a change of username. Is it possible to either change the username on this account or delete this account so my email is free to make another? If so, how? Can't seem to find an option. Thanks!

Other thing is, I seem to have options to stick / delete / edit peoples threads, possibly even to ban other users (I didn't press the button to make sure if it worked, but the button was THERE!) I'm pretty sure I'm not supposed to have those powers? Is it broken? =/