looks like twitter is making some attempts to cut down on impersonation accounts by using a new font for twitter handles. note the slashed 0 and the tail on the l.
@molly0xfff Unrelated, but I am ashamed to admit that I only just now noticed the last name joke in your handle.
@a, I'm sorry to say it, but you're not alone. It took your post for me to realize it. D'oh!