Multiple Urls Same Ip - Promotion

I have hosting and 20 sites with same IP, does it negatively impact rankings if they have same directory submissions? Same directory IBLs?

 

Google might discount the links between the sites but apart from that you will be fine.

 

Yes, I link out from my PR5 site to get other sites indexed. Good so I can do same campaign using dirrerent keywords without worrying about wastign money.