Blogs are good for SEO because they make it easy.

[Tobi]

Blogs are good for SEO because they make it easy to ADD content to your site. As your blog grows, the site grows and you have more pages that can be indexed by Google (and thus found by people searching for the content you offer.)

Another key benefit is that blog posts are indexed quickly. When you publish a blog post, servers around the world are pinged to let them know that a new post is available.

 

[Fire&Rain]

A blog works like steady fuel for your site. Each post adds a new page that Google can index, and that increases your chances of showing up in search results. Search engines respond well to fresh material, so publishing often helps your site look active and relevant. The fast indexing of blog posts makes it easier to reach readers without delay.