I suppose it only makes sense:
QuoteOn Monday, the NSA tweeted from @NSACareers, "tpfccdlfdtte pcaccplircdt dklpcfrp?qeiq lhpqlipqeodf gpwafopwprti izxndkiqpkii krirrifcapnc dxkdciqcafmd vkfpcadf.
....the Daily Dot reported the tweet was code for: "Want to know what it takes to work at NSA? Check back each Monday in May as we explore careers essential to protecting our nation."
http://www.usatoday.com/story/news/nation-now/2014/05/06/nsa-tweet-encrypted-recruitment/8757093/
That one was easy, they should use something more difficult than a simple substitution encryption. :)