Why are schools starting to ask what other schools you are applying to? I could see it going either way with the admission process, though I doubt it makes a bigger difference. I was just wondering if anyone had any insight to the practice. My best guess is that they are trying to collect information and figure out admission statistics to better serve them in the future.
Personally, I am inclined to leave it blank because I think it's a mute question. And if it was really going to effect my admission decision, I won't have it.