a great overview of the way in which joe public got involved in the Mumbai Attack and started to document and re-present it

"Twitterers are hair-trigger communicators, and presumably absolutely itching to get something of substance into their despatches. Whereas a journalist has a reasonably strong incentive not to broadcast misleading or dubious information, because such an eventuality would come with a professional cost, a Twitterer owes no duty except to their own impressions and their own state of mind. They'll pass on rumour as readily as fact, and there's absolutely no way of telling which is which." filters, again.