What is guest blogging?

The term itself is quite self explanatory. However, here is a little explanation. Guest blogging means you write and publish an article on somebody else's blog. You are not the owner of the blog but you are writing a blog post their as a guest author.

Why Do SEO Experts Talk About It So Much?

When provide another person's blog with a valuable article, He/She allows you to place your own websites link in the article which gives you some positive rank movement in search results.