The point wasn't to discuss the macbook's heat issue, I think those are rather well known around these parts. My point was that the beer belly wasn't caused be

The point wasn't to discuss the macbook's heat issue, I think those are rather well known around these parts. My point was that the beer belly wasn't caused because the laptop was plugged-in but because it got hot. So barring issues with botched software as was the case of my macbook, I don't think some devices are better suited than others to be plugged in all the time. Especially for doing something as lightweight as being used as en external monitor. I've been using that mbp for 2.5 years all day every day, plugged in, for actual work (among which compiling stuff) and the "new" battery is still fine.