I did not know many people who truly liked the pricing structure of Yahoo/Overture's SiteMatch program. A pay for inclusion and pay per click fee just did not like it would take off. The program was first announced back in March at the NYC SES conference where people at the Paid Inclusion & Trusted Feeds erupted in the room. Then to ease people's worries, Tim from Yahoo began answering questions in the WebmasterWorld Forum. Unfortunately, Tim is just one man, constant complains about Yahoo!'s poor customer service was spreading at the forums.
So now we see that Yahoo is one of the search engines that are rethinking their price structure. Ask Jeeves just announced something similar a few days ago. I posted this over at the Search Engine Watch Forums to discuss.