I run a coworking space in Reno and as soon as I saw these, I knew that I wanted to have them installed in the space so that we can make better use of heating/cooling with people coming/going, etc.

As luck may have it, one of our members works on wireless thermostats (http://www.radiothermostat.com/). While they aren't as sexy looking as the Nest, they have a full REST API so you can build an app around it or just use curl. It gives us much more control but does require we roll our own app.