I applied for a J.C.Penny card on a whim this time last year, because Christmas shopping season was upon me. Glad I did! They granted me a cli to $1,000 at first of december, and just last week, got a $700 cli raising me to a cli of $1,500.
Not to mention I shopped there anyway. Just makes things a LOT easier and spreads the utilization around a bit. (always a good thing)