Here is a list of questions we ask our clients who are considering developing a separate blog site.
If your goal is to enhance your main website’s SEO authority, clearly the better way to do this is with an integrated blog.
A few years ago that was not the case. It used to be that you could build any number of separate web sites, point their links at your main website, and successfully increase your main website’s SEO authority and thus search rankings.
For understandable reasons, Google is not fond of artificial link building. It does not benefit Google’s customers. Google users want to see the best, most relevant websites. Not websites that SEO specialists have created to gain rankings.
Bottom Line, Google is smarter than that and is discounting such websites as linking schemes. Google ranks low value for multiple links from the same site. Google ranks low value for from low value sites.
In other words, getting a single link each from a handful of trusted 3rd party authority sites will be more valuable to your website’s SEO strength than getting hundreds or even thousands of links from low-value sites.
You could spend the time and effort to build quality backlinks to your blog website so that its links, in turn, pass more value to your main website. But the basic idea of sending any visitor off your main site just to get them back is absurd. By making the blog part of your primary website, any connections that it gains will more effectively increase the SEO value of your main website.