Been thinking about buying one of those perfect world zen cards for 20 US. Kinda wary of doing so as I have never done that. Seeing that post by grouchytaku makes me even more wary.
There's nothing to be wary about. You can use a Prepaid card from anywhere. You can buy the Cards online from various game retailers and they'll even just email you the number you need to implement. It's nothing to be worried about.
STO is about my Liberated Borg Federation Captain with his Breen 1st Officer, Jem'Hadar Tactical Officer, Liberated Borg Engineering Officer, Android Ops Officer, Photonic Science Officer, Gorn Science Officer, and Reman Medical Officer jumping into their Jem'Hadar Carrier and flying off to do missions for the new Romulan Empire. But for some players allowing a T5 Connie to be used breaks the canon in the game.