I heard that if the domains are hosted on the same IP address, or same c-block of IP addresses, the link may lose some of its weight or if the domains share registration information, it may be interpreted as less editorial and given less weight. Will that be really affect our page ranks. If I have a set of website registered and hosted under same name. Will all that links have less weight-age?
There are currently several times as many web sites as there are IP addresses and most of them therefore have to share IP addresses with unrelated sites.