About same C-Class IP and SEO

Hello mates...


I'm wanting to start a network of sites, then I started to see these things about C-Class IP to do interlinking...


I read about penalities on backlinks coming from the same C-Class IP...


Then I saw a network of sites called "GirlsGoGames"...they have a lot of sites, in a lot of languages...

I just saw a few of the sites, and they're mostly from 1 single IP...


IP: 212.72.60.181
girlsgogames.de
girlsgogames.fr
girlsgogames.it
girlsgogames.pl
girlsgogames.com

IP: 212.72.60.182
girlsgogames.nl

IP: 212.72.60.221
girlsgogames.co.uk



And now...What a surprise!

Almost 100% of their backlinks come from the other sites of the network...what mean: backlinks from the same IP, or backlinks from same C-Class IP...


Not, another surprise!

Their smallest website is in 82k alexa ranking...a lot of sites are about 10-20k alexa ranking, and the biggest one (the .com) is one of the 1k biggest sites of the world...
AND ALL THEIR BACKLINKS COME FROM THE OTHER SITES OF THE NETWORK!


What means, Google don't give a crap to the IP...
Or they are using Cheat Engine? hahaha

Comments please...

it looks to me like different c class ip .... 182 different than 221

Do you really know what is a C Class IP?
Coz the "C Class" of these IPs are 60, from 212.72.60.xxx

=)