On major issue you might have to deal with and take care of when building up an entire network of blogs or websites is finding a place for all of them. If you just dump all of your sites at a regular web hotel of the most common kind they will most likely end up with very similar (and obviously related) IP-numbers. That is not always very desirable, quite the opposite actually. You just might want to use some of the domains or sites in the network for some creative linking or other stuff like that. What about the alternative then to spread the sites out over many different IP? Yes, that could be done of course but would also be really messy with dozen of logins, passwords and confusing user-interfaces. Dead end, as it seems. Not necessarily so, I have just received a little lesson in search engine optimization from a very knowledgeable friend who claims that something called seo hosting is the solution to all of these problems. Apparently users/customers of this technique gets access to several hundreds of IP’s or more.