I completely support corporations or public agencies going their own way on web updates rather than using a microblogging platform like Twitter, but for fucks sake it's completely pointless to post an update without the time and date (and ideally and expiration). For example I was looking for trail conditions in a state park near me and I have no idea when the conditions posted are for. Now, I can go onto the web archive and figure it out, if I want to, but that's not what most people will know how to do.

Date everything.