Building and selling a software/application/service/product is more than just building and selling features.
A common mistake which sales guys do is to feel that more features relate to more chances of sales. For the sales guys this must read from ‘Ignore the Code’ – Removing Features
A common mistake most tech guys do is to feel that sales are based entirely on the product. This post by Steve Blank is a must read for all the Tech guys – Convergent Technologies: War Story 1 – Selling with Sports Scores