Christianity before and after 2004

"Not Many of You Should Presume to Be Bloggers:Theology Before Facebook, Theology After Facebook"
by John Dyer:

....Throughout the history of public theological debate, there was one constant—those debates only took place between a few select people—Moses, Plato, Augustine, Aquinas, and so on—who gained respect through a lifetime of scholarship.

But the invention of social media, like blogs, Twitter, and Facebook, created a radical departure in communication. In pre-2004 Christianity (that is, Christianity before Facebook was invented), only a small group of Christian leaders and teachers had access to the printing press—but today everyone has WordPress. In pre-2004 Christianity it was difficult to become a published author, but today everyone is surrounded by dozens of "Publish" buttons...  full article