Not really sure why Nest would let Google purchase them to "continue their innovation". What has Google done lately that hasn't failed miserably??? I'm not really concerned with ads in Nest products, but rather this could end up being a product that starts to fail down the road. Sure, it may take a year or two, but once the real Google influence comes to Nest you'll see their products go down the toilet. Google has lost all and any innovation it once had.