Lets start here ...

Many bloggers share similar viewpoints.
As a meme is picked up and repeated it spreads through the net.

Some denigrate this phenomenon as an "echo chamber".
While this view has some validity, a "preaching to the choir" aspect, I'd like to present a slightly different view.

You can't stop the signal

Let's call it signal amplification.
What may start as a small indistinct sound, through repetition and amplification, becomes a broadcast.

See Gunwalker

What was once unintelligible noise becomes a distinct unignorable message.
Hope someone gets the message loud and clear.
Hope that tuning in here doesn't bore ya.