Mother May I?

Maybe I haven't fooled around enough with it, but can I create an RSS feed for Google searches...I know there is one for news, and I saw an RSS feed for Google searches through Bloglines' auto discovery for RSS feeds at www.google.com, but it was non obvious and beyond my (albeit limited) ability to manipulate it.

Seems like a good place for RSS, probably a good place for value-added RSS, i.e. the ability to put some analytical tools on top of changes in search rankings.  Or, is this already being done and I'm just behind the times? I did notice that Technorati doesn't have RSS for keyword searches but does have it for tags.

Tags are good, but as someone watching multiple companies I want to run an RSS feed of a specific search string in several places.  I saw through Brad Feld's blogroll that Newsgator does keyword searches, and that is helpful, but again, I want an RSS feed that monitors changes to Google searches and I'm not the least bit perturbed if they want to insert ads into that feed.