I have 2 players on nearly all ladders and have never tried to hide it. This account and freire (Pedagogy of the Oppressed, a great read if you get a chance). I originally got the second account to play 2v2 with another of my roommates but consequently joined the other ladders due to lack of games. I've always been in 5 games at a time but due to slower players, their right, and stallers, a large problem, I decided to join the other 2 ladders. The rules state to not operate 2 accounts in a manner that would give me an advantage on a ladder. My 2 accounts have so many unexpired games that when they are matched up, it hardly effects either rating. (that might be 'affect' I never know). I'm open to listening and will remove freire if enough people are offended by it.
freire
http://warlight.net/Profile?p=2027580034