Look, I guess theoretically its possible for a Google employee to join anything they want, how would you know. But even if they did join, Linkvana is made up of so many thousands of different blogs, if not tens of thousands, that it would take a long time for the google spy to be able to report back to google on all the blogs. In fact, Linkvana would probably be adding blogs at a faster rate than the spy would be able to report….

Even if the WORST did happen and google found out all the thousands of blogs that make up linkvana, they can not really penalize your site, because how would that be fair if you did not authorize them to put a link to your site on their blogs.

Thats not how Google works in my opinion, you can’t control who will link to you…

So really, I don’t think you have anything to worry about. I have been using Linkvana for 6 months now, and have only seen positive results, so its up to you.