Just another fad that I don't see any need to be a part of.
I do think it's enlightening. It shoes us what people will do for attention, or alternatively to conform to the behaviour of their peers. Something we've known about for a long time, but this is another example and perhaps a new extreme.
It's shocking, but perhaps not surprising, that some people will drink their own poop and post it to YouTube, without questioning the wisdom of doing so. After all, lots of people are now uploading nude pictures of themselves to reddit, and other places, where they'd be easily recognised.
So I think we have to conclude that the stigma of doing so is much reduced. People are more accepting of these behaviours, and possibly they are no longer 'abnormal'.
I wonder if we were always this crazy as a species, or if the advent of communications technology has just put up a mirror in front of our eyes.
[to Magnolia: I know what you're going to say. Knock yourself out]