Under these conditions catchweights of samples can be used, so long as they are within reasonable limits (say ±5% relative).

We were all fighting fit, but still hadn't learned to conquer the desert's khamsins: scorching, unbearable winds that blew through the sands.

While ban and his pals stand squarely in this tradition, they also stand for something new: the rise of organized griefing, grounded in online message-board communities and thick with in-jokes, code words, taboos, and an increasingly articulate sense of purpose. No longer just an isolated pathology, griefing has developed a full-fledged culture.

Eighteen years after Jaycee Dugard disappeared in 1991, she was found alive in the summer of 2009.