I've done this, and gotten the nice people at Home Depot to cut the large board into 2 or 3 smaller sections. Since the board is very thin, this makes it fairly light. I don't bother with screwing them into a wall, but instead use the lightness and portability. I can literally move a whiteboard into someone's office, draw on it, and then take it with me. You can lay it flat down on a table and have everyone draw on it. It's also insanely cheap. While I wouldn't give up my glass (white)board, I do like having extra space I can draw on and move around, especially for important ideas/pictures that need to be captured later on in better ways.