[longtermmemmory]

I thought apps like trapster were taken offline because police objected.

Also relying on other people is not as reliable as using the police’s own vehicle lojacks.

[Charles Martel]

Oh, the police certainly did object, but Trapster is definitely still active. They've even got it ported to the Blackberry now. Escort's networked radar dectors use Trapster data.

IIRC, the cops were trying to negate Trapster's effectiveness by making false speed trap reports. Trapster countered by adding a "confirmation" feature, allowing users to either confirm an active speed trap or report it as false or inactive. Works well enough to tick the cops off.