"Startup founders are the architects of the future, building bridges to worlds that do not yet exist. Their greatest challenge is not the obstacles they face, but convincing others to see the invisible and believe in the impossible."
Websites like:
Cansell.in
Pabbly
Zingoy
Checkoutsaver
Which sell and buy coupons, they generate revenue by marginal benefits of coupon. Does they have only this revenue model or any other model exist?