Тук Google леко си признават че shared IP не е много добра идея
http://groups.google.com/group/Google_Webmaster_Help-Indexing/browse_thread/thread/1973c511f2a0ace/
Lots of sites are hosted on shared IPs. If this had a negative effect
on ranking, it would harm most of the sites on the web--and that's not
good for small webmasters or for our users. So, understandably,
sharing an IP should not have an effect your ability to rank.
btw все ми се струва че някъде имаше лаф по темата, но не можах да я намеря :-(
http://groups.google.com/group/Google_Webmaster_Help-Indexing/browse_thread/thread/1973c511f2a0ace/
Lots of sites are hosted on shared IPs. If this had a negative effect
on ranking, it would harm most of the sites on the web--and that's not
good for small webmasters or for our users. So, understandably,
sharing an IP should not have an effect your ability to rank.
btw все ми се струва че някъде имаше лаф по темата, но не можах да я намеря :-(