The tradition to select a Word of the Year (WotY) goes back to the 90's when new terms and electronic communication allowed words to be shared and made popular more quickly.
Two dictionary makers weighed in with their words in October - Overshare and Photobomb. These were announced by Chambers and Collins dictionary respectively.
The Oxford Dictionary chose Selfie as their word last year and Vape for 2014 in November.
The American Dialect Society selected Because for 2013 and will announce their WotY for 2014 in January.
a photograph that has been spoiled by the unexpected appearance of an unintended subject in the camera's field of view as the picture was taken.— Photobomb (noun) Collins Dictionary Word of the Year 2014
Pictures like the one below of Queen Elizabeth's photobomb during the Commonweatlth games made the term popular.
reveal an inappropriate amount of detail about one's personal life.— Overshare - Chambers Dictionary Word of the Year 2014
Kim Kardashian is among the celebrities that are known for oversharing and sometimes introducing the world to things like a vampire facial.
Vape is not a new word. It was first suggested when smokeless cigarettes were being tested in the 1980's. It has been the electronic cigarette that shot the term to fame with Topsy showing the term used 124 000 times a month while the increase in Google searches suggests it is a good selection.
Collins Dictionary mentions many more "new" words in the video below.