down the bottom on the left, look for `change details`. In there you can add a signature. If you want to add a picture (still or a moving gif) you`ll need to open a photobucket account. Once you`ve uploaded the pic you want to copy the url of the pic (the one that starts [ IMG ] without spaces) into the signature box then save your details..
There`s been an incredibly large amount of requests for this information in the last few days. How about a Forum F.A.Q`s page?
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I ate what?
My Collection