I have seen it mentioned when someone messes up their title that they can't fix it or they PM me or another moderator... You can edit your own topic, if you catch it right away (you have 5 mins of creating your topic) using one of three method:
1) Double click the space beside the title in the forum view and edit it right there then click off of it. (See post #4)
2) Click edit in your original post, and then click "go advanced"
3) Click "thread tools" in the top orange bar when you are in your topic and select "edit thread" then "perform action")
Editing of your post has no limit.