I know you mentioned different IP blocks, which I agree with but why do some people say it must be different "class c" IP addresses?
As far as I know, the two things that make a class c ip address are the subnet and being in the range of 192-254 or something like that.
Why couldn't it be a "class a" IP address? 1 of my sites is hosted on 68.xxx.xxx.xxx and I have another one on 67.xxx.xxx.xxx. Why would a search engine think these sites were on the same computer? The
network identifier is different.
Is there something I'm missing or are "class c" people just over simplifying things?
Sorry if this went off topic a little bit.