How a six-month-old startup got bought by Google

When your product is 80% done, that means you have another 80% to go. "To get something pretty close is easy, but you need to concentration on the little things. That's what will set you apart from the competition," says Crosby. "You can have the best algorithm in the world and the fastest process, but at the end if the day, if the user struggles to find out how to click a box or delete something, then you don't succeed.

Link:
http://blogs.business2.com/.../zenter_acquired.html