San Diego, CA-based Trapster celebrated its five millionth user Friday night, April 9, 2010, an accomplishment only a handful of other mobile applications like Facebook Mobile, Pandora, and Skype have achieved. Trapster has grown 10x in the past year. Starting from about 500,000 users last April, Trapster exceeded one million users by last July, and it was just December 20th, 2009 when Trapster hit the 3 million-user mark. There were only 40,000 users in October 2008. Trapster runs on all major smartphone platforms, including the iPhone, Android, Blackberry, Nokia, WebOS, and Windows Mobile, and also Garmin and TomTom GPS devices. See http://www.trapster.com/