Kagro X says it well.
Bloggers use links to give readers the opportunity to view their source material. When a blogger makes an assertion, you can typically check the validity of that assertion by following links to that blogger's source, and decide for yourself whether it's been properly analyzed.Now, bloggers also link proper nouns to previously composed materials in the interest of providing context, but the "original source link" standard is the basis for all blogger authority. Our sources are right there for you to read, and we encourage you to draw your own conclusions.
When traditional media use links, they tend to point to that media outlet's collection of archived articles on the proper noun they've attached the link to. - Kagro X, "One quick note on Frank Rich"