What does "web media" in this article refer to? Is it an umbrella term for everything non-independent, non-user produced media? Is a youtube channel "web media"

What does "web media" in this article refer to? Is it an umbrella term for everything non-independent, non-user produced media? Is a youtube channel "web media", is my blog, is huffpo, are the forbes not-independent-but-totally-not-endorsed-"sites"?