BackLinks from different IPs

[Rodney]

Why does google favor websites that have many links located on different IP addresses and not from the same IP address during optimization?

[paul]

Google may consider its link spamming if it is originated from same IP address exclusively.

[Peter]

I think, if all backlinks come from the same IP address the site may still gain a good PageRank but not as good as a site that is linked from multiple IP addresses. One consideration could be that all sites hosted on a shared server will have the same IP range.

[paul]

Anyway, referring to seomoz, " If a site shares an IP address or a C-Block of IP addresses with the target linked-to site, a document's link may be devalued partially or entirely". Btw, I firmly believe that global link popularity simply measures the importance of all the links from important site.