how important is unique IP / nameserver to SE ranking?

[baddog]

Originally Posted by neveremail

So, if you have 100 sites on different domains then yes all of should appear in the search results as long as its not duplicated content. But being free sites (so only small with low PR etc) they will probably be buried very deep in the SERPs.

However 100 sites on 1 IP is a bad idea, I'm sure google will pick up on that and possiblt take a disliking to it (possibly considering it should just be treated as one big site).

So you should limit the amount of sites per IP/nameserver.

I dont really know an exact figure but I think the generally about 5 domains per IP.

Am I right here or not?????

A couple points of clarification here:

Good PR or poor PR has zero to do with SERP's.

We do not recommend putting even two domains on 1 IP, much less 100's. You can put several sites on the same class C, as long as their themes are different. That is why you will notice our dedicated hosting packages have up to 14 IPs per Class C, but with unlimited nameservers.