Remember that there's not just one answer. While other answers may work in different degrees, you should find your marketing mix. While I agree with some strat

Remember that there's not just one answer. While other answers may work in different degrees, you should find your marketing mix. While I agree with some strategies (particularly inbound marketing), I think that viral marketing has very high potential. Think about that: you want to grow from 100 to 1,000 users. How many hours did you spent on each one of those initial users? Now multiply it by 100. Seems scary, doesn't it? Better harness the userbase you have, and let them spread your product. If each one of your users can bring one more user, you've effectively doubled your userbase, and then again, and by the third time you are 200 users away from your goal. This seems so easy and magical on paper, but you have to design your product's virality: thinking about how it's easier for your existing users to bring more of them, and rewarding both, either with cash or with influence. A lot of business have been made with this strategy in mind. Just look for the story of Hotmail. If you want to read more, check out Ideavirus by Seth Godin, and Viral Loop by Adam Penenberg.