Google has made it publicly known that if you have multiple sites, with essentially the same content, on the same Class C subnet, they are going to impose what is called the
host crowding penalty. This penalty means that they are only returning two results for you, rather than however many sites you may have with the content requested.
It is precisely this reason that we came up with
GotWebHost.com. We offer virtual and dedicated
hosting packages that offer not only multiple IP's but multiple Class C subnets, and multiple and private nameservers.