imo, this is just a way to "weed out" se spammers and sites that have no reason to have rankings for certain keywords. As long as you continue to practice "white hat" seo strategy, you probably have no issues and will be fine.
they post this up to scare a lot of people into going the right route and removing the trash of their site. I dont blame them, half the results are either click arbitrage attempts, or just plain spam.
Keep your site relevant to the term(s) you are optimizing for, and link to and get linked from relevant sites and you should have no problems. Of course all this is just my own
