Have you noticed the ever-growing number of Google-owned sites that have crept into the search giant's results? Doing a Google search for Diet Coke and Mentos will take you to a results page where half of the items are videos on Google's two video sites: YouTube and Google Video. The same goes for millions of other search queries that are pulling from the ever growing number of Google sites and services.
Is there a problem here? It depends on what you were looking for in the first place.