Not too long ago I wrote about links from different IPs. I recently asked my webhost about the possibility of getting different IPs and found there is none (unless I get a new host). Anyway, one person has been trying to convince me that there's no way a search engine can determine a site's IP (and therefore they could never determine if too many of your links come from the same IP). I know of two papers that discuss devaluing links from different IPs.
Again, there is no direct evidence that this is used, but there is circumstantial evidence. Google has been reported to ban sites that buy a ton of links from just one or two other sites.
It's very easy to know the IP of a website, try "start->Program->Accessories->commend promote", then type "ping domain.com". You even can easily know how many sites a certain IP host with whois.cc, search a domain name, it will tell you how many sites on the same IP.
Looks like a typo:"discuss devaluing links from different IPs."
Posted by: KL at September 3, 2004 1:18 AMI may be distracted by my cold, but I don't see anything wrong with "discuss devaluing links from different IPs".
Posted by: James Trotta at September 3, 2004 11:54 PMTrade links with seo-search-engine-ranking.com
http://www.seo-search-engine-ranking.com/ad_network_222.php