It's looking like LEIA is getting some spam. Clever spambots too. They copy previous posts and then add their links.

I suggest a vBulletin version of one of those human challenge modules (like "What color is the sky?", or "You are a penguin. True/False")

Or a moderation team of some kind. But I think the best way is to block spam before it even gets to be moderated out.

I think the challenge questions sound good. However, definitely not ones like gmail has when you forget your password. I can never read those.

The human challenge module was installed a long time ago. I also added captcha. I just installed a new spam mod, and hopefully that will take care of at LEAST the spam links. They're getting clever!