i have a few credit cards:
my discover card (first one!!)
sears gold mastercard
pier 1 gold card
exxon gas card
lerner new york card
the sears and pier 1 cards i got because i was buying something $$$ and didn't have the money (but i was getting it soon, i had them both paid off in less than a week! woo!) at the time. the exxon card i got because this way i can pay at the pump instead of going inside. a nice thing to have when you buy gas at night. the lerner new york card i got because i was buying a ton of clothes, and wanted to get the 15% off that day. i admit it! the discover card i got because it was my first one. i wanted to establish good credit.
honestly, i'll probably cancel the lerner one sometime this year, even though i've only had it, well, not even long enough to get my first bill. but i don't plan on keeping this many cards. i wish i knew what was a good amount of credit cards to have to maintain good credit, even if they're all empty. i hope hope hope to get a new car in like december, and it'd be nice to get a nice, low percentage on that car loan. i wish there was a way you could do a credit check on yourself without putting points on your record.