Hello, I started a hosting / SEO company some time ago. At the moment I have them all on two high-end dedicated servers. The domain for the hosting company itself is also used as the nameservers for all of the clients below it. Although the main hosting domain is on its own IP and all clients on either a largely shared IP or on their own IP's - Would linking from them to my own main hosting domain get me penalized? Given the main hosting domain is also the nameservers for those sites. I have a large number of clients now that host with me, some are just hosting, some are high PR SEO clients who host with me also. I feel as though my main hosting domain is missing out on some link juice by not getting my footer links on my client sites - but I'm terrified of getting penalized ... or worse, my clients getting penalized in some way. Any thoughts would be appreciated.