[kbenson]

There seems to be a difference between a plain search for cmdb, and a search for cmdb and some other term, which makes sense to me. If searching for for just "cmdb", I think it's likely you are looking for information regarding CMDB systems, and possibly looking to purchase one (and even if not, often sales pages will do a good job of selling the main points of a product). When using an additional term, I would hazard you are generally looking for a more educational response about a specific aspect or problem, and the search results seem to reflect that with less ads.

If ads are displayed more for people that are possible looking to buy something, and less for people who are not, then I think that's a net win, if done correctly. We'll see how it plays out in practice.