Acquiring the first 100,000 users with zero marketing budget requires strategic moves. Start by making the product or service irresistible. Offering something of high value that solves a problem or fulfils a need can attract users.
Next, leverage existing networks. Encourage friends, family, and colleagues to use and share the product. Word-of-mouth can be incredibly powerful.
Thirdly, target online communities relevant to the product. Subtle promotion in these communities can yield a significant number of users.
Additionally, consider partnerships with companies that offer complementary services. This can provide access to a larger user base.
Lastly, ensure excellent customer service. A satisfied customer can become an ambassador for the product, bringing in new users.
Remember, the key is to focus on building a quality product and nurturing relationships. Growth will follow.
Go to source article: http://www.quora.com/What-are-key-strategies-to-acquire-first-100K-users-with-zero-marketing-budget