Although this is question is not nearly as asked as for some of the other guides I have made in the past, I still think it would be cool if people knew or learned how to do this.
Creating a Signature
This follows the same principal from AetherRowlet's "How to Make A Basic Website Signature" post. This means the signature will be using basic fomatting code to display what you need. In this case, it will be a GIF.
The Formatting Code
In order to make this, go to home page of website. Go to Account >> Forum Signature >> Site Signature. In the area where you are able to type, type up this formatting code:
[img]Insert GIF link here[/img]
The area where you insert the GIF Link has to be an exact link to the GIF itself, and not the website where the GIF is found.
Enjoy your GIF signatures everyone! If I missed something, or you feel the need to correct me, Please do!
Have a great day!