As Sandeep mentioned, a clear path to profitability is essential in today's business environment. Viral marketing refers to the way in which you can attract new users to your Website without spending a lot of money. Today, hotmail is owned by Microsoft and has 66 million active users. This feature will allow users to send e-mail or content from your Website to their friends. This should be effective in attracting new people to your site.
Market research is critical to any product or service.
Focus groups that are a form of qualitative research should be used in the early stages, like when you're looking for idea input on which direction to go. Other forms of market research such as quantitative research should be used when you need a more statistically significant sample. Today's Internet environment is a lot more difficult a place to run a business than even just a few months ago. So you really must be focused on building a sustainable business with a clear emphasis on profitability. And, in addition to that, like any startup, you need a solid management team, a large market and some form of competitive advantage.