How to use promo credits?

June 21, 2011 8:03am CST
I registered at, and I have 300 promo credits now. the site said that one promo credit is equivalent to one unique visitor if you have a site. my question is this: 1. how will I use my credits to gain visitors to my site? 2. does 300 promo credits automatically credits the site I assigned on my account? have you tried this site? pls, somebody share your experience with this site.
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