This is a story best told through images. The Washington Post home page on Thursday afternoon, linking to a story about the emotional clues in tweets:

Washington Post Twitter headline

And The New York Times, linking to its story on the study:

New York Times Twitter headline


Yahoo News' Dylan Stableford notes other uses of emoticons in Times headlines and points to a spirited debate a couple of years ago about whether a story in 1862 used an emoticon. Or maybe it was just a typo. || Related: New York Times and Washington Post use same front page image for Irene coverage