“Lynda.com currently has over 1 million paying members and saw 42 million uniques over the last 12 months—a 20% increase from the year prior. That’s not mind blowing, as there are a number of digital publications and blogs that see that much unique traffic in a month, rather than a year. But the real kicker is that Lynda hit $70 million in revenues in 2011.

Co-founders (and couple) Lynda Weinman and Bruce Heavin started by sinking $20K from their savings into Lynda. They were profitable, Heavin says, within a few weeks, and they haven’t taken a penny of outside funding since. And that’s not for lack of offers, as both founders hinted that sizable investment offers have been put on the table on a number of occasions. But the company has been content to fly under the radar and rely on word-of-mouth marketing, subscribing to a ‘if you don’t need money, don’t take it’ policy.”

Read on to find out how lynda.com hit $70M in revenue without a penny from investors.