Ingenio offers pay-per-call api

"Holoubek expects pay-per-call to appeal most to icrossing clients looking to reach a local audience, especially clients with local franchises or local marketing budgets, like insurance or car rental companies. It's especially good for a business like insurance where customers have to share private information, and may not want to do that online. "It's great for any area where there is a segment of customers who feel more comfortable making a phone call," she said."