[1] - better sources on-line are usually first-hand reports and the opinions of the "protagonists" of a new story.

[2] - well, a lot of people don't want to spend time vetting their sources, but this should prompt them to assign very low confidence to the things they read; of course, they frequently don't, which is why they need to be reminded that when they repeat what they read, they're most likely repeating bullshit.