I tried doing some searching for this and wanted to get some other thoughts. Currently I have my MacBook extend its desktop to another monitor. I'm thinking of purchasing a larger monitor and just using it as a single display. My question is, if I run in clamshell should I be worried about leaving the MacBook plugged in and running all the time. If its in clamshell mode and I turn it off the only way to power it on is lifting the lid and pressing the power button correct? Is anyone else out there running with a laptop all the time in clamshell mode and leaving power plugged in?