Okay now, lets get down to these questions what everyone is asking so much to me, this will serve as a faq for it from now on.

What are blognetworks?
Blognetworks are a number of blogs owned by a certain individual and not comment spam/post pings.

Do i need article spinning?
The purpose of article spinning is to avoid duplicate content (serp spam) penalty and get indexed at google for the post/keywords that are on the post/page, this is called serp spam and is frowned upon at google, its much more worst then duplicate content to be honest, because here you are ruining your own serps, for example ;

If you are ranking #1 “webmaster” for your domain “webmaster4u.us” now you will get the edge of having a keyworded domain anyway but if you spam your own serps by forcing indexed pages on to the result page you will end up as either de-indexed/penalised or ranked way down below in rankings, if not that then the pages on which you have bought links will rank higher then your own page as well.

Serp spam (article spinning) is very common among blognetworks nowadays, its to force pages into serps which is mostly forced as a penalty on the buyer rather then the seller.

Whether its a client or just someone asking for advice, my answer to this is always no, do not spam your own serps.

What about relevancy?
Nah relevancy doesn’t quite matter untill you are on topic about the post/page or whatever it is you are promoting, with the proper tags/description relevancy doesn’t matter, after all there are tons of life blogs that rant about the most randomest of things and still get great serps.

Do different ips matter?
With or without i have seen the same results everywhere, ips do not matter but the authority of the blogs and results matter more.

Additional info
Here is something people don’t quite know, rather then authority/pr/ip there is one more thing that matters alot in blog networks which is TLD diversity, it matters alot if you have a specific number of backlinks on .com or .net or .org or .info those are the 4 mostly prioritized TLDS at google other then edu/gov if you only focus on infos you will get a rather lower rank, if you go all aroundand have links from all 4 tlds and more it will not only give you a great boost but also start you off on authority at google too.