I'd guess Stone Sans (customized).

Hmmm... I think we can do better than that.

This is a image (for a better comparison) from their website:



And this is the MyFonts sample (smaller than the one I posted before).

I still think it is Stone Sans; the V and the R were modified though, and there's some tracking.

The stroke widths seem different. But the M is very close.

I didn't post this sooner, but I agreed with Eduardo's ID as Stone Sans. I looked through about 1000 sans font samples using those letters, and that was the only font that was that close, in my opinion.