Picking which idea to work on is the most important decision a founding team can make. Execution is important, but is too amorphous a concept to be called a decision by itself.
Team is important too. But while investors can choose between different founding teams based on their experience and such, the team is a constant once the founders establish it.
Four Guidelines:
1) Your idea needs to do at least one of three things:
Make something difficult easy, make something expensive cheap and make something that entertains
2) Pick something with a big market pain.
Market size isn’t always a great indicator of potential for success.
3) Commerce ideas are very different from social ideas.
Social software (e.g. foursquare, Instagram, Twitter) follows a different path than ecommerce. Compare this with ideas that have a clear business model from the start.
4) Pick something where you can empathize with your users.
Ideally, you would be building something for yourself.









That’s really thinking of the hgihest order