The Oxford English Dictionary has released their list of new words to be added to the pivotal dictonary, and a batch of internet and text-based words have made the cut.
The new words are quite varied - California roll and the ten second rule have been added, along with the Japanese word hentai, a genre of anime (comics) that feature gratuitous nudes and/or sex. (Notice too that I no longer italicized hentai - since it's in the dictionary, you can consider it a common English usage word and no longer considered foreign - and thus, no longer bound by rules for words from foreign languages.) Other fun additions (to me at least) are couch surfing, gremolata, headline (really, that wasn't a word before?), taquito, smack talk, and tinfoil hat.
Why does this matter to writers, though? Essentially, it's just another lesson in the evolution of language. Especially in today's technology-abled small world, people have to come up with language to describe new technology or the new adoption of a foreign word all the time. Writers can take advantage of this by making sure they're out there, knowing and listening to the language as it evolves.