From FAQ 3, the event is "free", but on closer inspection, when trying to RSVP, the free tickets are actually all gone, and you're required to make a "contribution" of at least $5 to get a ticket. That's totally cool, I accept that if there were an infinite number of free tickets it wouldn't be manageable, but I can't find any information at all on how many free tickets there were, or how many are available at each tier. (In the nicest possible way of saying this) I haven't heard of you before, and I have no reason to think that the lack of free tickets at this point isn't artificial scarcity to try to coerce me into paying for access to this "free" event. I'd like to think that's not the case, but without a clearer picture of the scale, it's a bitter pill to swallow, and doesn't instil confidence as to the future direction of the project.
Or maybe I'm missing something obvious, I'd be delighted to be wrong here.