I have a competitor who ranks in the first page for all his keywords and i found out in open site explorer that he has been interlinking between websites and it is obvious because he owns the same domain but different countries. for example, www.example.id (indonesia) www.example.my (malaysia) www.example.sg (singapore) (asian countries domain) my question here is this even consider "white hat"? I read one of the blog post from moz and here is the quote "#7 - Uniqueness of Source + Target The engines have a number of ways to judge and predict ownership and relationships between websites. These can include (but are certainly not limited to): A large number of shared, reciprocated links Domain registration data Shared hosting IP address or IP address C-blocks Public acquisition/relationship information Publicized marketing agreements that can be machine-read and interpreted If the engines determine that a pre-existing relationship of some kind could inhibit the "editorial" quality of a link passing between two sites, they may choose to discount or even ignore these. Anecdotal evidence that links shared between "networks" of websites pass little value (particularly the classic SEO strategy of "sitewide" links) is one point many in the organic search field point to on this topic." will interlinking between your sites will be ignored by google in the future? is this a time ticking bomb method or it is fine doing so? Because as far as concern my competitor is actually ranking on the first page for quite some time.