Most of the “useful news” that I find comes from forum posts. I have pretty narrow interests, so a lot of the news from most places that I frequent passes me by. The only place that I’ve actively checked hobby news in the last couple of months is TWW. I used to frequent TMP regularly, but have largely faded away from there. I find Facebook to be a pain, with far too much garbage to sort through for the useful content.
Other places that I get news, generally from forum posts, are WD3, Post Apoc Wargames Forum, and the Starship Combat News Forums. Not news sites by any means, but they fit my needs and interests. I also still subscribe a few Yahoo Groups, and get E-newsletters from a few manufacturers that are of interest to me.