Just like the title says: do you use a GM screen? Why or why not?
The GM screen is one of the traditions of RPGs, but it's one I very rarely use.
I had a discussion with my wife about the Mutants & Masterminds GM screen and how useful I find it, but I usually run games with it flat on the table so I can access the information when I need it while not creating a divide between GM and players. When I run Pathfinder, I never use a screen.
GM screens are certainly useful, but in high school I started gaming in places without tables, such as living rooms and bedrooms. While I now game at tables more often than not, I usually keep very loose notes and trust the players not to look at the stuff they're not supposed to. When I do need to make a roll in secret or hide something, I just lift a notebook to function as a temporary shield.
My wife, who started playing with me well after I stopped using a screen, stated that she hates screens because she feels more like it's the GM versus the players when one is up.
So what are you thoughts on using a GM screen?