Trapster allows the online community to share and update the locations of speed traps. You can inform them of speed traps either using their software client or by just calling a toll-free number. The service then warns local users via an SMS or notification in the Trapster client. You can also check the location of speed traps on the mobile web at http://trapster.com/m. It will display local speed traps and hiding areas in either a list or using a static Google map.

Trapster software can track your location using either bluetooth GPS or wifi location. Their client runs on a number of phone handset platforms including Blackberry, Windows Mobile, or Nokia smartphones. Trapster is also available as a widget for Yahoo Go 3.0 or as a Where widget. If you don’t fall into these categories, but have a Java-based phone, you may still be in luck.

According to this Wired article, Trapster has received no complaints or warnings from the officials it has discussed the idea with as of yet. I’ll be signing up shortly, and will follow up with a review.

• 7 Twitter Clients for Mobile Phones
• Get your Zimbra Mail anywhere with ZimbraME
• Dash Car GPS Navigation Units Get Social