It looks interesting however it's not for me:
I don't have WiFi, maybe it can use a neighbors.
I already have programable thermostat that works well.
My thermostat is installed upstairs, so how will it sense I'm leaving the home downstairs, unless it's only based on time of day.
Do I need a firewall or anti-virus? I don't want some hacker baking me to death, man it's hot in here.
I just found a way I can save $249 on my electric bill, don't buy this.