Green Screens

Stuff at Night keeps plugging this new "green" cafe on Newbury. Apparently, because they use flat screens instead of paper menus to post the specials, they're extra green ... um, what ever happened to a chalkboard? Wouldn't that be the greenest option of all? I can't imagine that a coffee house using resources to power these screens during working hours -- and to purchase them in the first place -- is a "green" investment, but that's just me.