Hype-based ones like what's described in the original blog post are a nightmare. And I don't even need to pull the privacy card; the UX is already daunting enough.
A good benchmark I have is my wife, who didn't grow messing around with computers and a tinkerer's mindset: if she's taking more than a couple of tries or days to tinker and start living with something new, I need either to prep a better backup plan, or to cut it off. Very specialized stuff (like light bulb colors) are still too expensive to have more manual-like controls, but almost everything toggleable should have something one can press.
Did they forget it's proprietary, and from the same person that made OpenFeint, which also had a privacy lawsuit?