People have always self selected their sources. The internet just gives them more sources. And it is actually quite easy to separate the wheat from the chaff.
Heck, when I first became a Christian I was STRONGLY a pre-tribulationist for several years. Then I read some interesting contrasting opinions, did some research and became mid-tribulationist. I did a lot more studying and became STRONGLY mid-tribulationist.
And the internet constantly solidifies my viewpoint, often due to the arguments made by the pre-tribulationists.
The internet really just impacted us in the same way the printing press did, except a hundred fold. And it is so big that, unlike ink and paper, nobody can control it.
FYI
You nailed it. We don't trust newspapers because we think a handful of people control the content. We know that the internet cannot be controlled. Too big . . . too many "on-the-scene reporters."
The Iranian riots are a recent example. If the internet did not exist, do you think we would have even an inkling of what happened there? We would only have Irania propaganda, filted through American propaganda.