The thing I don’t like about the Google mesh system is that, if you read the fine print, you’re giving Google entitlement to all the data that runs through it. If you’re using the system to handle proprietary data, whether business or government or what have you, this can result in some thorny legal issues. I wouldn’t. The same applies to Google-supplied broadband, last I checked.
Google used to have the mantra “Don’t be evil.” Whatever happened to that.