I think Sparrow is asking how you made it to a PR7 without trading any links, or rather is wondering if you did trade links and then deleted your links page. Most gambling sites have very large link directories, so it is easy to see how many link partners it took them to reach their PR level. The concern is that you might have linked with many people, then deleted your links page so that all of your links now show as one-ways.
You seem to be saying that you have purchased links, and Google shows that you have over 4,000 backlinks, Yahoo says 288,000 so that is impressive.
The key for us as webmasters is to know how you acquired so many links since May of this year (when your domain was registered).
BTW, I sent you a PM.