Not judging here...but don't forget these are real credit cards. If the people who sign up don't manage them, they can end up with nasty little financial surprises (annual fees, etc). And, some folks aren't responsible with cards, and may up regretting the temptation - esp. when there's a minimum spend that they feel compelled to make.

Also, if you are the one managing them for others, do you have a contingency plan should you fall ill?

Again--this is meant as constructive input. Just as one has to be careful about asking people if they'd like an alcoholic drink, one has to be careful about pushing credit too hard.