Slight delay, but yeah. what sky2224 said.

For some time Twitter seems to have been the defacto real time announcement tool for companies. Now Twitter has been made private seems ripe to be replaced by a startup.

Not OP, but it's nice to be kept up to date on what companies are doing, who is hiring, stuff like that. I frequently see managers announcing positions on LinkedIn, but I couldn't care less about the borderline sociopathic posting some people do.