Well, was hoping someone knew of a mod? The limited guest mod apparently prohibits google. How about an image in your face (like one mod) or something else that blocks content or limits it until you register? Thoughts on this. Thanks.
Anything that blocks, guests will block bots as well unless you get something custom made. But I don't see why you need it if someone wants to register they will. Best thing might be a small icon that pops up asking members to register something that wont stop them crawling your site