So if I buy a domain, and don't use it for a few months... it could be blocked (since many registrars like godaddy put up a parked page if I am too lazy to change it)?

Then I would have to dig around and unflag it? What about people who don't use this service (like myself) that would never know the site they are trying to promote is being blocked?

From the site that keeps all the blocked domains:

"First, we're very sorry for any inconvenience this false positive may have caused you. Seriously. Second, find the domain in the list, using the alphabetical directory above. Finally, click the X next to the domain to report it as a false positive."

I realize this is unlikely, but it seems like a service that keeps a database of pages it considers spam should automatically check for this situation on a periodic basis....