|
This is my guess - if your sites are all of good quality and have unique content it shouldn't matter.
If you are interlinking all your sites just to manipulate PR and they are close to spam then you would want to spread them all around. I'm think the SEO servers are not as good as random virtual accounts spread around the globe.
Google could analyze IP allocation from ARIN, RIPE, etc. If all your IPs are with one data center (even if they are on different /24s) it would look different from a data mining perspective. They could also look at name server diversity, registry information (are all your domains registered at the same company) domain keys, server headers, and who knows what else. I highly doubt they do all that now, but as computing power gets cheaper and more powerful they will probably start adding that type of data to fight spam.
The way I see it is you can either spend your time making quality sites or spend your time making shit and trying to stay one step ahead.
|