The comparison of YouTube and Facebook is one of noting the reach of specific platforms. You seem to be pointedly failing to recognise the fact that 1) a video platform without YouTube's reach would not have served Psy, and that 2) Facebook was a key component in the propogation of the video itself. Both relate directly to the question of
platform size.
I wasn't aware of counter/hoax status, though I've bumped into int limits myself, so found it plausible. Thanks for the information.
Your personal experience on any social network is almost never a solid basis for extrapolating to others' experience. That's something my own experience in quantifying the size of active user communities and range of conversation across networks has established quite clearly. It's an argument I've long since tired of.
On G+, the median number of followers for a non-publicly active profile -- 94% of all profiles -- is two. For profiles with any public posting activity at all, it's slightly higher: five.
https://plus.google.com/104092656004159577193/posts/RhnKkfTN...
The median friend count on Facebook is 200 as of 2014, and the network is used by 57% of all American adults:
http://www.pewresearch.org/fact-tank/2014/02/03/6-new-facts-...
Your original contention was that "There are literally thousands of popular forums that are not facebook." My response was that there are at best very few platforms which can match Facebook for general discussion. Something I've studied directly, in large part because I'm interested in finding good general discussion.
I'm also not a Facebook user, because I find the morals and practices of the company and its founder dispicable. A frequent affliction of mine, as a brief perusal of my G+ profile may indicate.
My larger points are these:
* On any given topic, for any given discussion, odds are far higher of finding a relevant discussion group on Facebook than on virtually any other platform, with the possible exception of Reddit.
* For any mass media online message, such as, say, the Prime Minister of Norway might care to engage in, Facebook is, hands down, it. Nothing else, not Twitter, Tumblr, Reddit, Usenet, not nothin', will compare. (You've been, I'll note, peculiarly silent on offering specific alternatives.) I'm not saying that this is my specific use case. I am saying that if it were, FB is reigning king.
Your observations on the specifics of conversation on Facebook as opposed to other platforms matches my own direct quantified research to a large extent. You might care to look again (or for the first time?) at the link I posted above. "Tracking the Conversation: FP Global 100 Thinkers on the Web":
https://www.reddit.com/r/dredmorbius/comments/3hp41w/trackin...
Yes, Reddit beats out FB, though Metafilter knocks out both on the basis of relevant discussion, albeit at vastly smaller scale. Blogs in particular score exceptionally highly for content, but have a discoverability problem -- again, FB can address that.