If there's an AF on the card, I would close it.
If not, I'd keep it open.
+1, I just closed my Credit One that I have had since 1999. They have monthly fees, so is definitely not worth it. The best scenario would be paying it off and then closing so that the utilization doesn't really factor in overall. 0 limit, 0 balance. You've added new tradelines so should be a wash. The card will still be factored into your AAOA for the next 10 years, so you really won't see any negative effects from closing right now.
I concur on closing it. Get rid of all the sub-prime lenders!
They should be sued for using a logo that resembles Capital One!
Close it, I will close mine before the AF hits, pretty soon...
Close it. Shred it. Have a beer.