You can try and fake a MVP and test it like Buffer - http://blog.bufferapp.com/idea-to-paying-customers-in-7-weeks-how-we-did-it http://blog.bufferapp.com/idea-

You can try and fake a MVP and test it like Buffer - http://blog.bufferapp.com/idea-to-paying-customers-in-7-weeks-how-we-did-it http://blog.bufferapp.com/idea-to-paying-customers-in-7-week... and look at spending on landing page/traffic allowing you to test multiple ideas at the same time and see which one sticks.