Every so often, when I'm in the throes of doing a first-pass edit, I let off some steam by tweeting something like, “I get paid to delete the extra spaces you type after a period. Don't I feel special.”
And then I get a flood of replies steeped in honest confusion, because people believe they should type two spaces after a period.
And then I explain why doing so is just so very wrong.
And then I admit that I, too, was taught to type two spaces, but that I was able to overcome what I was taught.
From now on, I'm simply going to link to this Slate piece by Farhad Manjoo. Read it. Please.