Not so very long ago, there were typically two or three pages of "New Posts" each day. Recently, it's rare to see more than one page of "New Posts." Active threads disappear pretty quickly. I've taken to PMing people when I've answered a question because the thread disappears so soon after I've publicly posted.

Is this a purposeful change? Or is it just the vaguaries of Internet algotithms? I really appreciate having lots of threads to browse when I visit the forum. Can anything be done?