Everyone seems to assume when looking at the search terms that people are being stupid and actually searching for a search engine. This is not always the case. For instance, while Google is getting better at this, they have not always been good at providing links to their various services. For the longest time, I knew of no way to get to a direct link to Google Analytics, thus if I was on a computer that I didn't have bookmarks, I would simply search for "google analytics" which gave me the results I needed. Both google and Yahoo are used for much more than as a search engine. Add to this that they are also both in the news a fair amount and people may want to find information about some news development.
Don't be too quick to assume the reason for people making searches, particularly when you don't know the full search string that they used.