Successful companies rarely achieve their success on their first idea, says Jason Cohen. Instead, your initial idea causes you to get something out into the marketplace, from which you can discover a truly good idea:
Here's a newsflash: Your idea probably sucks, and it doesn't matter because your business will probably be about something completely different.
Flickr began life as a multiplayer game, which morphed into a way to share photos via chat, which eventually turned into the photo-sharing site we know today. The post has other examples as well.