Other option is Crime Stoppers... 1-800-222- TIPS
Above is merely a suggestion/thought and in no way constitutes legal advice or views of my employer. www.OHTA.ca
Also, it is illegal to do that, right? Someone else posted that it was only illegal to sell a vehicle with an altered odometer, so the ones offering the service were off the hook as long as they weren't car salesmen. But I found it to be an offense under the Weights and Measures Act - is that criminal?
http://www.OHTA.ca OR http://www.OntarioTrafficAct.com
Also, you're required to record you odometer reading on your vehicle registration renewal.