Ask HN: Crowdfunding – Best Practice

Hi guys, I've been looking at how to raise funds from my small startup and a lot of ppl are pointing that crowdfunding could be the way to go. In most cases I see that ppl have physical products that they give away to those who support the idea, but how about if you're doing online software product? I see that there are also different types of crowdfunding - those where you give equity and those where you give your product away.

Any suggestion, comments, ideas are more then welcome :)