Interesting Ronak what did you do and what did you find worked? And what return in terms of clicks /reach did you get from FB 3. Facebook ads work well, if you don't just send people directly from ad -> campaign.
I'm new to kickstarter but would say reaching out to everybody you know, friend, business, sales reps everybody, before you launch. Going into it I wanted the launch to be sort of a surprise and looking back just these few days that has been my biggest mistake!