SEO problem

This problem should be a trivial fix but is an issue for search engines...

The problem is that when an ad is published, it appears not only in the block but also as a node in itself (page view). The problem is, Google indexes this and it is effectively search engine spam. Furthermore, on our site we use the advertisement module to advertise internal pages and trick click-through locally. The problem is that the node version of the ad ends up competing with the actual target page in Google.

A possible quick solution would be to add the 'no index' meta tag to the node page. Alternatively a hack would be to use pathauto + robots.txt.

Hope this helps!
Chris.