IP address is almost useless, and I say that with respect to GT, and the people that have helped to build Links Sql into what it is today, a fantastic program.
The reason that I say this, is simply, the majority of the population have dialup accounts where they are assigned a new ip address everytime they login, so if I really wanted to get my site to the top of the listings, I could certainly take the time to login to my isp 5 to 10 times per day, (actually due to my isp , who shall remain nameless, i often times have to login to my isp account 10 times daily), this would mean that I can come to the site and click at least 10 times per day to boost my site up the ladder, a really determined person would do this. I think it's 1. best not to divulge to your visitors how you are rating sites, whether it be based on keyword density, url, title etc.
We give our strongest rating to the urls, because we feel that people will have gotten a domain name that reflects their site if their serious about their website (yup, i know that if the posters knew about this, they would be making directories and pages with the same keyword names as what they are trying to list, for example, dog food could be listed as a url of www.mydomain.com/dog_food/our_dog_food.html to try and boost their rating), yes I know opinions seriously differ on this but that was our choice like it is this persons choice to display them based on the amount of hits the listings get.
Just my unsolicited thoughts on the subject.
Have a wonderful day
Harrison
"I've got if's pretty good, but that's about it"