I don't understand how this is working?

I send you my email address and you send me a code that I use on their website?

Am I committed to buy after I send you an email? If not, then what's the point of not posting the code in the forums? I just don't understand the logic?

Thanks,
Zack

- Zack

1995 Contour LX
2.5L V6 MTX
150,000 miles and still going strong
PIAA 510's (Finally I can see again!)

"It isn't pollution that's harming the environment. It's the impurities in our air and water that are doing it." George W. Bush