[QUOTE=EJsGirl]
I was coming in to say that maybe those folks haven’t lost all of their good writing manners in the digital age… 
[/QUOTE]
Not yet, but I’m working on it. 
It’s just a habit. Sometimes it means just what it says; sometimes it is shorthand for “fuck you, you meerkat-molesting slimebucket”. Depends on the context.
Regards,
Shodan