This is what '74 has been saying all along, I believe.
Someone, believed to be a well-paid consultant, sold Disney on the idea of catering to fan bloggers and lifestylers as a means of countering any potential criticism that may arise online. (I cant remember the guy's name, or his exact quote, but it was something about how one positive review can outweigh X number of complaints.)
In essence they are creating a small army of "brand advocates" by wining and dining them, giving free trips and tours, (heavily controlled) access to imagineers, etc.
This is separate from the actual travel industry bloggers that they also court. A legit, high-traffic blog or site that doesn't strictly cater to fans is indeed a wise investment. As Matt said earlier, they can reach a ton of people that otherwise aren't thinking about Disney. That Drummond woman's 13-20 million page views could certainly worth a trip. But what if your site gets less than 100 hits per day, mostly from friends and fellow Disney fans? Why are those folks getting trips and cruises? (Hint: The answer is above.)