Hmmm interseting question .... However ....
Since your sampling on an enthusiasts web site, expect your getting a non-random subset sample of the true purchasers which will probably biase your findings. Older, younger, more divient ... I dont know, but it ain't the random sampling method they preached in Stats 101.
Example: if you polled here for V6 vs V8's, i'm guessing that you'd end up with 80% V8's as your answer, when the mix is projected at less than 1/3 V8s. Why? Cause all the tean-age barbie princesses and mid-life pretenders who buy the V6's wont be here to respond to your question.
Now, if you want a break down of who is on this sight .... then the poll should be much more valid ... but don't smear the world as a hole based on this group of voters.