To personalize your forum account, you may add a signature. It is under your User CP -> Change Signature.
(Minimal 10 post count is required in order to activate such feature in your User CP.)
There are certain things that are not allowed in signatures that are allowed in the rest of the forums. This is a list of what those are.
First, we have set limit to the signature.
We restrict the size of your signature as it is meant to be an enhancement to the forums. When it becomes large, the signature actually detracts from the flow of the thread in which it is contained.
The limits are as following:
255 total characters.
Outbound links in signatures are not allowed except for a very few exceptions. One of which is Senior members and VIP members are allowed a link to their own personal sites after being reviewed by a forum staff first.