I have excellent credit myself, but I have on my account an additional cardholder (family) whose credit isn't so spectacular. (They only use the card for emergencies and always deposit cash in my account within the month, so it's not a matter of trust—they're open with me. I'm just curious how much of their actions affect my own reputation.)
Take the worst case (or at least, what I think is the worst case): they declare bankruptcy. How would that affect me? I would hope that it wouldn't affect me at all, as long as I'm paying what's due.
Thanks in advance.