I'm interested if there's a way to blacklist a URL so that it is removed if someone attempts to put a blacklisted link in their signature, for example those dragon egg pictures. If not, would it be easy to manually plug in? I ask because the last thing I want to do is manually enforce such a rule. The Help Manual's spam section only specifies removing threads. edit: After further research, I came upon $pattern and $replace, would this work? Would it be easy to implement in the signature database?