There's already been several scams - there's also been legitimate projects that have just gotten in over their heads.
I really think the next two years will show the fruits of what Kickstarter has wrought. People are all excited about it, because really - at this point (for software development) it's still all POSSIBILITY, which is exciting. But in this next year, we'll see what kind of fruit it bears.
As a positive point, I'll mention that Phoenix Online raised money for "Cognition" with Kickstarter, and they delivered the first chapter of their game last fall.
A lot of people are skeptical about Ouya, but they've been sending out their developer consoles as of recently, so there's something on that front.
Heh - as for Lore - it's definitely become a little joke amongst the Kickstarter community.
Bt