Distributing small chunks of text sounds like the wrong problem to call "hard". It is building trust in them. Problems with the web of trust are well documented and pretty much boil down to "random people in the Internet turn out to not really be the most trustworthy of mediums".
There’s one final problem even harder than that. Creating a UI that by itself explains this whole complex concept, to a user with an average attention span of 3 microseconds.
Just look at how many scam attacks have been made possible just on urls.
