I'm on a snowboard forum that has seen the same trend of decreasing traffic. Everyone left there is, how shall I put it, of a certain age (including me). Folks there are also hypothesizing that people that once might have joined the forum are moving to Facebook instead. It's too bad because I think FB is crap and don't use it. Both this forum and my snowboard forum have a fabulous signal:noise ratio and content of a quality that I don't think you can find on social media.
So...anyone want to hear about my trip to Pujol in October? :-)