[dahart]

Sure, I totally agree one should be careful about their info & travel & drugs. But, that's what both @acetoxy and @cbluth were already saying.

I assume what you meant to say is that you personally wouldn't trust YouTube as a source of high quality or trustworthy information about drugs in South America, because it's demonstrably and absolutely true that YouTube videos contain information. Millions and millions of people successfully use YouTube to share and gather information on a wide variety of topics.

If you actually wanted to help someone who's trying to be careful, perhaps suggest some more trustworthy sources, or how to find them? What makes a book or person or pamphlet or phone call or any other source any more trustworthy than YouTube? Even if there were scientific research, what makes it trustworthy? Peer reviewed papers are proven wrong all the time. How does one go about being careful?