I can agree with side.cr, and lyft.. That they are simply a platform by which drivers, and those wanting to be driven are able to reach other. However... Even though payment is voluntary the drivers are participating in a transportation service, and are subject to being regulated as one; non-profit or not.<p>Not a perfect example of this but similar is that craigslist might be a communication tool for those dealing in prostitution, but they are not the ones committing the crime.