[Timothee]

Keyhole -> Google Earth was a big success too.

The thing is that we tend to forget the successes a little bit because they got to merge so well with Google. Looking at the list of acquisitions on Wikipedia (http://en.wikipedia.org/wiki/List_of_Google_acquisitions), I can only think about Blogger but I have no experience on if it changed for the best. As far as I can tell, it looks like it's still working fine.