Hmmm... that makes sense you know as in the real world a popular site has links coming in from all over the globe.
The quickest way to tell the search engines you are linking to your own web sites is to link from a site that is located on the same IP address. So, if all your domains are hosted with one host on one server there is a great chance they all share an IP or a block of IP addresses in the same class c block.
That can spell TROUBLE and trigger filters if you link among your own sites.
OH NO! I want to link to my own sites!
Fortunately, I found that there were web hosts offering dedicated servers for much less than I was paying and I adapted and spread my domains over 3 new servers with clean IP addresses. You see, the search engines, and Google in particular, had become so sophisticated that they could figure out that servers had IP addresses that were all in the same class C block, and if too many links came from the same IP range, it signaled a red flag to go up (it still does by the way) and theyd ban the interlinking sites.
So the solution that worked then and works now is what I like to call IP Diversity. Make sure that if you link your web sites among themselves that you make an effort to spread the domains onto different servers with as many different class c IP Addresses that you can.
By class C, I refer to the third octet in an IP address. example 212.16.17.14 - the 17 is the CLASS C. So, if you had a domain on a separate IP address 212.16.17.19 - it would be considered the same class C IP block and would very likely trigger a red flag to go up if there was an unusually high percentage of your overall links coming from a particular class c block.
So, if you want to make sure your sites are ban proof and do not get dinged with penalties or worse yet BANNED for linking within the same class c IP block, make sure you spread your web site domains with different web host all over the globe. You see, its just not natural for a web site to have TOO MANY links pointing to it from the same IP class it is in, OR from too many web sites within the same class c ip blocks.
If you really want to study this further I suggest checking out the excellent OptiLink software, or SEOElite, which can show you what IP Addresses the domains that are linking to you have. If you run one of those missions it will become clear to you when you see the IP addresses. So, if you want to make your sites ban proof, be sure to consider IP Diversity whenever linking to your own sites, or when trading links en masse with other webmasters.
If you can't afford a dedicated server, set up new free hosted accounts at wordpress or blogger and also get a free cheapo hosting accounts that go as low as $4.95 a month or so. That'll give you some IP diversity and allow you to be a bit more in control of your linking.
About the Author
Mike Liebner is a respected SEO expert and the author of the popular free Article Marketing News newsletter available at http://www.ArticleMarketingNews.com which includes a free PDF Special Report with over 3 hours of free video called Words Equal Money
About the Author
Learn How To Get Top Google, Yahoo And Msn Rankings... And Best Of All, Learn How To Keep Those Rankings From Dropping Over Time.Visit: http://tinyurl.com/seo-mind-set-course The Grand Daddy Of All Seo Software! Get A Top 5 Google Ranking In Under 30 Days! Visit: http://tinyurl.com/seo-elite-get-top-ranking