[dullcrisp]

Half of that $5000 is from a single pledge. Is it possible that they pledged $2500 to themselves to make it look like their project is getting more attention than it actually is? Or does someone out there just really really want this game?

[ajross]

Mostly likely that's exactly what it is. I know if I were to run a scam like this, the first thing I'd do is a bunch of fake pledges to drive eyeballs. I think the total overhead is about 10% (split between Amazon and Kickstarter), and of course you only end up paying it if the scam is a success.

[almost]

You wouldn't actually need to pay the money. You'd just need to make sure it got pre-authorized. Then once you got another legitimate pledges you could withdraw your fake ones (or leave them up but without any money in the accounts, I believe it's fairly common for KS not to be able to collect al the pledges at the end)

[RBerenguel]

Known as "salting" (found out in Cialdini's Influence)