Digital Trends – On Tuesday, the Seattle police department launched a 12-hour experiment that posted all 911 emergency calls into the official @SeattlePD Twitter feed. This test was intended to give the public a better understanding of the call volume and types of reports that flood into the emergency call centers. The flow of tweets began at 6 a.m. and sent about 40 tweets an hour into the feeds to about 10,000 followers.  By 6 p.m., the account had increased by 478 tweets.