Also see Google OnHub review: Routers don't have to be so complicated (Engadget) and Google OnHub review—Google’s smart home Trojan horse is a $200 leap of faith (Ars Technica)
"The biggest downside for Google is that the router comes from… Google. Google swears that it does not track the websites you visit or pull any content from network traffic. (You can read more on all that here.) The search giant says it collects data about Wi-Fi channels, signal strength and the kinds of devices on your network, information that’s “relevant to optimize your Wi-Fi performance.” You can even turn off the cloud connection in settings, if you don’t like the trade off, but you’ll lose some smarts and the remote access.Google OnHub Review: The Wi-Fi Router Gets a Brain - WSJ
As weird a feeling as it is, letting Google take up a physical role in my household, it’s hard to deny what I witnessed this week: The best wireless networking my home has ever seen."