"Let's be fair to our fellow drivers so we can all continue to benefit from this amazing system," wrote "sandy," who suggested a dollar per ride.
But she was lambasted by fellow slugs. One suggested that drivers who pick up paying slugs should be licensed as a taxi service and that the IRS should tax the income.
LeBlanc also leans against cost-sharing.
"The rules of slugging are: The driver bears the costs. The slugs do not share in the cost. It would be very, very hard to determine what would be a fair and appropriate reimbursement to the driver," he said.
Longtime slug Erick Erickson of Burke, Va., wasn't sympathetic to the drivers who give him free rides, noting that he often drives slugs.
"This is the marketplace. If someone feels like it's not fair, they don't have to stop. There's no compulsion here," he said.