"All these different words are battling it out against synonyms, variant spellings and related words, " says Mr. Tenenbaum.

WSJ: Culturomics Looks at the Birth and Death of Words

Here's how the potential crime was supposed to work: Searches for business- and car-related words produced ads next to search results for legitimate pages like Cars.com and the Better Business Bureau's Web site.

FORBES: Magazine Article

Happy words include the omnipresent LOL and haha, as well as good, nice, sleep and wine, and food or beach related words.

CNN: The happiest and saddest states according to Twitter

They were then given the categories and asked to recall related words.

BBC: Computer boosts memory by 10%

And, so, in other words, it's not related to physical activity.

CNN: Vice President on his latest heart problem

The carrots offered through diplomacy consisted of promises that if Iran were, in the words of the Security Council, to suspend all enrichment-related and reprocessing activities, it would find itself on the receiving end of many benefits.

CENTERFORSECURITYPOLICY: Norman Podhoretz receives the Center's Mightier Pen Award