Here's an interesting post about journalists using Twitter tweets as an accurate source of news, centered around the timely issue of just who broke the story of Whitney Houston's death. Steve Myers contends that it was not really a Twitter user, after all.
Analyzing the tweet said to start the death watch rolling, Myers argues that, on the contrary, "I think it shows – along with the other two early tweets that said Houston had died — how hard it is for journalists to find early, reliable accounts of newsworthy events."
Myers also reports on a tool that aims to solve this problem, one "that would search for keywords in tweets in order to sniff out eyewitnesses to newsworthy events." Interesting.