Things that make me annoyed - almost all Groups and the People in those Groups on FarceBook. They are so self opinionated. They are also in the majority, very, very, very stupid indeed!
I mean, c'mon, who uses the abbreviation ETA as anything other than Estimated Time of Arrival; or Electronic Travel Authorisation? Yes, the second one is pretty obscure, I'll admit.
It does NOT mean PS or Addendum! Why oh why have I seen it so many times at the bottom of a post where PS would be used normally? I can only think they mean "Extra Thing Added"?