Agreed. I do leave small laptop on suspend overnight (not plugged in) and then I do use it on the train into work, so a small charge/discharge cycle each day.

Agreed. I do leave small laptop on suspend overnight (not plugged in) and then I do use it on the train into work, so a small charge/discharge cycle each day. The big typing box laptop (ancient T61p) is left on and plugged in a lot. May use a timer switch on the wall plug simply to reduce reliance on the overcharge protection in the battery/charger. I think those with devices that have batteries that cannot be replaced may be more concerned.