Google has been involved with is that of speed. Page Speed May Become a Ranking Factor in 2010. In announcement after announcement, Google has talked about the importance of speed on the web, and how the company wants to do everything it can to make the web a faster place.
Matt Cutts gave WebProNews another exclusive interview, in which he gave some more details about Caffeine (among other things. It's only hitting one data center before the holidays, and it isn't even live quite yet. Google will roll it out to more data centers in January.
In case you were not aware, Google "reserves the right" to change the titles of your pages in search results. Google's Matt Cutts has released a video discussing why and how they go about doing this.
While the world has focused on Google Wave as a mash-up of chat, e-mail, and document sharing, it's really something else: Google Wave could be the Twitter that everyone really wants. Maybe it's the Facebook, too.