As I'm new to this, just wondering if there's a correlation between actively using the card as your daily card and not being shut down. I can understand why a bank may shut down a card if it appears only being used for tradelines, but would they shut it down if you are charging $2000 per month on that card and selling tradelines on it? Seems like they may be foolish to do that. I find it somewhat funny, especially as I've added users to both Discover and BofA, and on both of those pages it says proudly "Add friends and family as a user", then they shut them down for adding too many "friends" or family. I look it as we are just using either tradeline company to "vet our friends".