If you want to learn skills from people or act on their advice you have to try and check them out. Just as in the real world. The internet is supposed to be a blind medium. Does this reveal a hidden agenda or bias. Check out the site for background.
Experience allows for other opinions and uncertainty.
Usenet comes over as a community and if someone makes sense you trust them. Before you act or implement ideas or discard ideas which have been argued against, check out the people involved. Protecting yourself is only a few mouseclicks.