MWpro - 2:24 am on May 1, 2010 (gmt 0)
Anyway, how is Google supposed to manage the millions of brand names out there?
You are assuming they would have to preemptively disallow such trademark uses. Wrong and impractical.
The best solution would be based on notice to Google. A trademark owner fills out a form that says "This website is using my trademark to promote similar goods or services." Google is put on notice, and then must block that advert.