I have my main application site https://drchrono.com, and I have a blog sub-domain under http://blog.drchrono.com. I was told by some bloggers that the blog sub-domain of your site helps the pagerank of your main site. Does traffic to your blog sub-domain help the Google Pagerank of your site and count as traffic to your main site?
I have my main application site https://drchrono.com , and I have a blog sub-domain
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I don’t think Google gives any special treatment to sub domains named ‘blog’. If they did, that would be a wide open door for abuse, and they’re smart enough to realize that.
At one time, I think there were advantages to putting your blog on a separate subdomain though. Links from your blog to your main site could help with your main site’s page rank if your blog has a decent page rank.
However, it seems like that has changed. Here’s an interesting post about setting up blog subdomains vs. folders. It seems like they are actually treated the same by Google now, although nobody but Google really knows for sure how they treat them.
With regard to traffic, your Google ranking is only incidentally related to the amount of traffic your site gets. Google rankings are based primarily on content and number & quality of incoming links, not on how much traffic you get. Which makes sense since Google really has no way of knowing how much traffic you get to your site other than perhaps the traffic they send there via Google searches.