Originally Posted by Frozen Fireball
A KS project automatically gets posted in various websites and forums and lots of people get informed of it. (I wouldn't know about this game if it wasn't for KS) It also provides a chance for continous updates. Not only it's free advertising, it's totally effective too. As you mentioned yourself, it also acts as a pre-order campaign, so devs have a chance to explain what kind of game they're making and consumers will know better what to expect. It's a beneficial method for everyone if it's used correctly.