I don't trade in the huge majority. Not always because I wouldn't have considered it, but they are mostly NTSC, be it the US or Japan - started boycotting PAL last gen (when barely anything that interested me came out). I've been buying some region-free games here if I find a good deal (PS3, NDS, PSP), and I've traded in some of them but it's not really the norm.
Usually I watch what I buy anyway, I don't trade stuff that I've finished playing, just stuff I didn't like.







