I've got a VPS and Ive created a number of blogs to link back to my main site to help build authority. Ive bought new IP addresses for each so that Google will see them as different sites and hopefully provide more juice. Ive been reading about C-Class IP's being the best but how do I know what class my IP addresses are?
If you did a basic mistake of having the registrar info on all your domains the same, you have wasted your money. Google will catch you. Their can see through even if you use a domain protection service
If is would say you didn't really have to do that, and if you want backlink juice..just use web 2.0 site and link back.