The fact that all but one of the new, informal versions is longer than the older words (two syllables instead of one) puts an immediate question mark by any assumption that the new forms could be a sign of laziness. But further, the fact that teens deploy this mix of formal and informal styles in writing suggests that what they’re doing is neither an imperfect transcript of casual speech nor a failed attempt at formal writing. Internet writing is a distinct genre with its own goals, and to accomplish those goals successfully requires subtly tuned awareness of the full spectrum of the language.