It's deeply fashionable these days for those who know pretty much everything there is to know about pretty much everything to decry people - those who are reckoned to not know half as much - uploading their pictures on the Internet and filling cyberspace with accounts of their insignificant lives. (Insignificant, that is, in the eyes of those who know; deeply significant to those who happen to be living them.)
For the life of me I can't see anything wrong with it, if it makes people happy - which it generally seems to do. And I really don't buy all these, This is the end of civilisation as we know it, arguments.
Ordinary happiness may be trivial but it's a big deal. Possibly the biggest of all deals. And if goofy photos and silly interchanges help it along that's fine by me.