So you have an Idea - What Next?
The greatest thing about internet is that it gives a level field to everyone. So, if you want to go ahead with your idea, then first of all create website for it. It is important to give people an address where they can go and try out.
the next step is to tell people about your website. For this, you will have to do some online & offline marketing. and if you do this right, then you will get at least an initial audience. The rest depends on your idea....