Google does NOT care if you root your Nexus!
I've seen a lot of people fretting about being able to RMA their nexus after unlocking/rooting/trying different ROMS & kernels. Likewise there are conversations about & guides about how to reset the device to hide the fact it has ever been unlocked. This is all an absolutely unnecessary worry.
So, to put everyone at ease I share with all XDA'rs the answer I got from Google when I asked "Hey guys, will rooting wreck my warranty?" I think you will all find this to utterly unambiguous.
Thank you for contacting Google!
Warranties and RMA are still covered *regardless* if a device was rooted.
We are not trying to prevent customers from unlocking the bootloader and installing a new operating system that allows for "rooting".
Android has always provided customers the ability to do that on Nexus devices, and encouraged other OEMs to do the same. So in that sense we are not against "rooting."
This being said, we can't guarantee full advertised/promised functionality if the source code for the Android OS has been modified as the functionality may have changed.
There you go folks, it's a developer's device so use it to it's full potential. This appears to be Google boilerplate so you're looking at an off-the-cuff response from some random support staffer. (I couldn't import the pretty formatting.)
Think any other brand/manufacturer would have a similar answer to the same question?
Hope this gives everyone a nice warm feeling -- and I suppose I should sign off begging you to hit the 'thanks' button.
Just to clarify, this about Google's North American policy - it appears that they follow this throughout Europe as well, and that European law probably reinforces this. Still, it can't hurt for anyone to check with Google themselves. Also, as per the thread title, this is about Google. If your warranty is held by anyone else this info may have no relevance at all.