PR 6 in Google. 10000 pages indexed with unique content. 2 years later have never had one visitor from Yahoo. They have only indexed 200 of 10000 pages. No black hat tricks. I personally think that since the main topic is saturated on the internet that they don't bother really looking at the entire site for 3+ years. Peoples thoughts....
Pharmacy industry. This is what I think. Yahoo says: If site main subject = more than 1000+ sites related to that do not index 100% for 3+ years. Yahoo will do anything they can to grab that $299 that they want from people on a yearly basis. I actually would do the same thing too. Why bother indexing someones site when they already know a bunth of stuff about the subject when they can frusterate the person until they pay the $299.