Given Google's recent change in trend, where do you think it stands?
I can see that it would initially be relevant, than it would gradually stray and become increasingly flooded with obvious ad bombarding and irrelevancy, much like what Google did to search.
The recent change in trend has never shocked me like the very small shocked few. A lot of people will say something like "Google is creepy!" and then turn around and do 10 searches on it that day in between checking their Gmail.