A few things I use - 1. Mailchimp 2. Twitter 3. Vimeo Videos 4. Facebook (but this is dicey if you have not yet launched) None of the above cost any money. If

A few things I use - 1. Mailchimp 2. Twitter 3. Vimeo Videos 4. Facebook (but this is dicey if you have not yet launched) None of the above cost any money. If you are a mass consumer startup, printing a few t-shirts and fliers will not hurt either. Have a few of your employees give out the fliers requesting users to review/test at popular junctions in any major US city during rush hr at commute hubs. You will be wearing the t-shirts. Online marketing is easy and hard at the same time. I believe the most important aspect is telling a clear & a good story. By the way, you will probably get more thoughtful and accurate comments if you describe what it that you are trying to market.