The boring truth is that we took Perry Chen's idea, and, like any software project, continued to refine and adjust our vision of what the site should be, and what the user experience should be, based on the imagined needs of some hypothetical users.
What we ended up building was only remotely similar to what our requirements started out with, and the project continued to morph after those initial stages, to what it is today.
I am sorry that this guy's startup did not take off as Kickstarter has. Making libelous claims about the work of others, though, is no way to be.