Google now offers a place where you can report any signs of spammers trying to get around the Google crawler.
If your Google search returns a result that you suspect is spam, please let us know using this form. We investigate each report of deceptive practices thoroughly and take appropriate action when abuse is uncovered. At minimum, we will use the data from each spam report to improve our site ranking and filtering algorithms. The result of this should be visible over time as the quality of our searches gets even better. In especially egregious cases, we will remove spammers from our index immediately, so they do not show up in search results at all. Other steps will be taken as necessary.All to the good, methinks.