Just curious about the signature hack you use on here

Why do you make it for regular members to? If the whole point is to help with search engines then why not make it for only guests? I like seeing others sigs as they can contain useful info. I don't see the harm in allowing them for registered members as search engines view it as guests.

I totally agree. My reasoning for not activating it for guests though is that new members might not be aware of the conditional signatures hack at all. I feel a good way of making them aware is allowing them to see the behaviour of signatures in postings (dependant on word count, etc.)