A credit card is fine, but lovebeats is right, paysafecards are a good option, or disposable anything if you're paranoid.

Maizleman is correct.

tvandlover is incorrect. (I don't know how new you are to all of this, Tarkus, but stand on me, not everything can be found via torrent.)

I personally wouldn't recommend oboom for various reasons, but honestly, pretty much anything else mentioned is a legit option; rapidgator, zippyshare, filefactory and mega, as realitybytez mentioned, are all good options. Oh, and fuck Zevera.