True, I won't contest that point. But do we know that the bloggers don't also support the site?
If you look at my profile you can see that I am a licensed real estate broker. If someone decides to FReepmail me and discuss doing business, was I guilty of using free advertising? To ease my guilt if that happens, I pledge to donate 10% of my earnings from any transaction received through Free Republic.
My only point is that we can choose to click or not to click, but I don't fault you for bringing it to the attention of the bloggers. Maybe they'll become donors!
You're not posting threads directing traffic to your site or self, now are you?
That right there would be the difference.