[jimboyoungblood]

i've "abused" countless laptops over the years this way. none of them seem to have been affected negatively. in comparison, my wife routinely lets the battery on hers run close to empty- her last laptop could barely hold a charge for 5 min.

http://www.marco.org/2009/09/24/laptop-battery-myths

http://www.apple.com/batteries/notebooks.html