Don't get me wrong selling and getting real product validation is the best.
But emails are one of the most valuable resource for marketing. You can always email people. But even advertising to the people that liked your page will cost you money and will be competing with tons of information.
But emails are one of the most valuable resource for marketing. You can always email people. But even advertising to the people that liked your page will cost you money and will be competing with tons of information.