I have made a forum of my own and allow members to have signatures. However, if they mess up the HTML in the signature, the rest of my page gets messed up, as they maybe forgot to close out a tag or something of that nature. Any suggestions on how to deal with this? (besides not allowing HTML in the signatures which is what I'm doing now...)

I'm sorry if this has already been asked, I searched and couldn't find anything specific to this. Thanks for any help!