I was interested in this thread simply because we get frequent requests for multiple shared hosting accounts on multiple C Class IPs which is really annoying at times to say the least. Its all myth based .. the link between a site's IP address and SEO. As some form of authoritative help on the issue, I turned to Matt Cutts' blog (Mr Google himself) and found this ... http://www.mattcutts.com/blog/myth-b...-ip-addresses/

Hid blog is a must read if you are serious about SEO and Google tbh.