""If a restaurant's not on Grubhub-Seamless, then their best option is to distribute paper menus around their neighborhood," Maloney says.

A lot of restaurant owners agree that is ineffective. Tom DeSimone owns the tiny RBBTS Café in Manhattan. He says the food delivery website connects his restaurant to law firms and banks. Big companies that use vouchers for websites like Seamless to reward their employees."

If this is a good reason for restaurants to stick to Grubhub and alike, then there's also an opportunity for marketing websites/communities for delivery restaurants. This must not be tied to a delivery/charging network like Grubhub.