[jlgreco]

Maybe. It is possible that the word is used sarcastically more often than literally though. For instance, it wouldn't surprise me to learn that the word "literally" may actually be used more often to mean "not literally".

[joshschreuder]

'Literally' is already in the OED as 'not literally': http://www.telegraph.co.uk/education/10240917/Uproar-as-OED-...

[leephillips]

Indeed! http://lee-phillips.org/literallyEgregious/