For Christmas, my boyfriend gave me two antique prints, which he had framed at his local frame shop. He's raved about the shop to me before for their friendliness and reasonable prices. I was struck by this clever detail on the bottom two corners of each frame: Silicone dots to keep the frame hanging straight on the wall. Such a simple touch, but it makes a world of difference. And anyone who has been to my apartment full of crooked pictures can tell you, I should add them to all of my frames. Does anyone know what these little guys are called?