I've observed through my own experience and through looking at Search Query Reports that a lot of searches are done for specific urls, a phenomenon which makes little sense but clearly has some practical advantage for the large numbers of people who do it.
This morning, for reasons I won't go into, I was searching for Facebook on Google, and saw the result below partway through the actual search.
The link is clickable, but I don't know whether this would count as a sponsored result for Facebook or just a way of Google giving extra relevance in areas it knows there is a demand, or giving a lift to sites it needs to cosy up to.
Facebook isn't the only one either. Media darling Twitter is in on the act:
While Google have protected their own interests, or aided them, by doing the same for Blogger.
Given that Google Suggest has recently been ridiculed for some of the random and in odd cases mildly offensive suggestions it comes up with, this is an encouraging step in the right direction for it being a genuinely helpful tool.
