Have we literally broken the English language?- The guardian

http://www.theguardian.com/commentisfree/2013/aug/13/literally-broken-english-language-definition
Mucking about with its meaning isn't clever or inventive any more

"Literally" has been playfully abused since the time of Walter Scott. In Chronicles of the Canongate, for example, he writes: "The house was literally electrified; and it was only from witnessing the effects of her genius that he could guess to what a pitch theatrical excellence could be carried." This was 1827, before the popularisation of the electric light: the house was figuratively electrified.
In 1837, a piece in The Mother's Magazine by Abigail and Samuel Whittelsey contained the phrase, "They both literally slept in Jesus", and in 1894 Sir Arthur Conan Doyle wrote, in The Memoirs of Sherlock Holmes, that Sherlock's room "was literally ankle-deep with congratulatory telegrams" (we can probably also take this as figurative).
The point is that even if it was fun and surprising to force a "literally" where another word should go back in the 1800s, it's getting a bit old now. But not quite old enough to change the word's meaning completely and clean it of all the irritatingly playful associations.
Plus, since then the word has picked up way too much baggage to make it usefully nifty. "Literally" has been mainstream shorthand for "talking like a teenage girl" for a decade – you're not going to get rid of that reference without violent verbal acrobatics. Literally, I'm afraid, is, like, totally eighteen-hundred and late.

To use it is to teeter on the edge of a conversational wormhole

You might be near a pedant, and they will say something like "Don't you mean 'figuratively?'" (no, no one says "figuratively" – it is pretentious) or go into "Yes, your foot is LITERALLY coming off. I LITERALLY believe you" paroxysms until smothered. These are the same people who use the word as a definitive intelligence measure – see the snobbery over Jamie Redknapp last year – which in my mind is as much of an error as using a specific piece of knowledge as a mark of cleverness ("X% of Americans don't know where Armenia is! So stupid…").

There isn't much to be done

Given all of this, even when someone does use the word correctly, ("he's literally the prime minister"), it is often such a surprise to the listener that the conversation halts anyway – prompting something like "er, yes. You're right. He literally is" to emphasise just how much they have acknowledged your traditional use of language.
So there really is not much we can do with the word "literally", other than avoid it completely. At the moment it is irredeemable. It is a moot word. We just have to leave it up in its bedroom for a while until it grows up a bit.