Two disclaimers: I know nothing about politics and I don't claim to know anything about them. I trust the moderators of /r/askhistorians to provide accurate information about past events.
Second, I know that posting comments off of other websites is poor form. I only do it when I feel that it is truly interesting.
That's an extremely good answer. Fascism is difficult to truly understand, especially as a student of history in the 21st century, for exactly the reasons he mentions. For more on this: I recommend the first 2-3 chapters of Paul Johnson's Modern Times, which deal with Marx, Lenin, Nietzsche and the cultural paradigm shift that brought with it fascism, and eventually caused most of the disarray in Europe from 1914-1945.I contend that fascism was a political movement unique to the early 20th century, especially in Europe, because its worldview was shaped by events and philosophical ideas from the late 19th century until the interwar period.
I don't think it's really bad form to link to certain subreddits like AskScience which are strictly moderated and generally feature top level replies by experts. I wanted to submit a post on /r/badhistory that was probably better than a lot of baccalaureate theses but it was about the Confederacy and I think we've had enough of those recently
Paxton's The Five Stages of Fascism (pdf) is also a good thing to keep at hand when discussions on fascism are involved.
That's the most important part. I don't think where content is from is as important as its calibre. Thoughtful, insightful content is what we aim for here. I only do it when I feel that it is truly interesting.