Misappropriation of the word "literally"

I'm breaking free from the advice for a second to do a little venting, because I believe that big girls should have a common grasp of the English language (unless it is not your first language; in that case, you get a pass). While it's true that I have always been an exceptional English student, I still believe that it is courteous and polite to speak properly, especially in a professional setting.

I don't know if it is because of Rachel Zoe or what, but in the past few years, the word "literally" has become a filler word such as "like" or "uh." Nobody uses is correctly. I hear people say things like, "we were literally rolling on the floor," or "this team is literally on fire."

In fact this has become so commonplace that it was satirized on How I Met Your Mother in an episode regarding annoying habits. Here's an English lesson boys and girls.

lit·er·al·ly

/ˈlɪtərəli/ Show Spelled[lit-er-uh-lee]

–adverb

actually; without exaggeration or inaccuracy.

The city was literally destroyed.

fig·ur·a·tive 

adjective

of the nature of or involving a figure of speech, especially a metaphor; metaphorical; not literal: a figurative expression.

While I understand that it's not exactly polite to play the Grammar Nazi on a blog, I can't help it. I think that in the age of the 140 character thought - an age in which email has virtually replaced face-to-face communication, it's still important to be well spoken. People will take you more seriously.

For now, I would be okay with the literal, figurative issue. It's a start. A step in the right direction. Just don't get me started on apostrophes...