Trade-offs
I'm also in favor of using smart meters to save me money. Heck, even just having access to the usage data is probably enough to create some incentive. Think gameification. I watch my father with his Prius trying to get his MPH as high as possible each month. I imagine I'd have the same reaction with a smart meter.
Still, geofer brings up a good point. There should be some privacy assurances, particularly as smart meters let utilities collect more detailed data on personal usage.