The Word Spy is a well-made site devoted to tracking the emergence of new words. It's a fascinating site to browse because of the thorough job it does defining, documenting, and cross-referencing these new words.
Some, like belligerati are witty Sniglet-like formations. Others, like CXO are likely to become useful words, even only if specialized domains. Yet others, like destination wedding or appointment television are more commentaries on our society (the need for the phrase indicates a new prevalence of the phenomenon).