I grumbled earlier on this thread about "invite" used as a noun (I was raised up to believe that "invitation" is the noun, and "invite" is the verb, darn it! And somebody saying "Golly, she gave me a invite to the wedding" just sounds WRONG! I hear it spoken in the voice of Gomer Pyle...)
Now, I am also becoming irrationally irritated about "Save-the-date". What is the world coming to?