I reply and post far less than I ever did. When I do post, I notice that I see almost no comments following. Now I understand that I might be boring to some, but to all? That's another issue, though.
I think not having private messaging or having the ease of chat hurts a little, too. I miss that PM function.
There seems to be less traffic and less postings from a broad group of contributors. A small group of people who do mutliple postings are doing a greater majority of posting now than in past (before the GUI change-over).
Have I stated that clearly?