I have looked at people's ranking over time every now and again. It's more out of fun and curiosity than anything else. I don't really know how useful and accurate some of the info is compared to their true popularity. I do however think that outside of the top 20 pornstars list it's not that bad because it's not influenced by as many outside factors, like links and photos on the front of the homepage, other than people’s random searching preferences. With the people at the to I often think it's influenced by that and the advertisements that are on there.