As anyone with even a little business experience knows, getting a startup off the ground almost always takes more money than is available. One of the most important talents that startup entrepreneurs bring to the job, then, is an ability to make each dollar go as far as possible.

Twenty years ago, before the Internet, startups had a hard time managing their marketing on their limited budgets. Television, radio, direct mail, location advertising and other traditional marketing methods were all unaffordable. Many businesses disappeared simply because they didn’t have a way to get their message across. With online digital marketing now, though, everything has changed for startups.…