A Google Wave started by the Seattle Times is being used to track information about the search for a man suspected of killing four police officers. It's the first Google-supported manhunt and finally a decent use for Wave. Update 6.
Due to Google Wave's real time updating capabilities, this is actually a rather fitting use. People are posting everything they know, from information about the suspect (right down to his old pictures and Twitter accounts) to news from police scanners. A Google Map of the manhunt is also being maintained with the major events of the search.
Officers on alert at "every exit route out of Washington" looking for officer shooting suspect (source: @seattlepi)
Update 2: Miscellaneous information currently known about the suspect:
(Suspect may be using alias w/fake WA ID for Carsile Dawson)
Suspect Vehicle Description:
green 1997 Mazda Millenia, WA license [License plate number removed, see update 5]
(vehicle is registered to suspect's wife)
Update 3: Note that a tip line is open for anyone with information regarding the shooting or the suspect's whereabouts: 866-977-236
Suspect reported near 13th and Lander.
Police no longer looking for '97 Mazda Millenia - WSP Trooper Brandy Kessler says it was sold 2 months ago (source: @KIRO7Seattle)
Update 6: The 13th and Lander report was deemed unrelated to this search.