I'd sure love to pick the brain of anyone formerly involved in the project - it seems like there is a lot we could learn from the trail it blazed. My email in profile, obligatory beers/coffee/etc. offer.
My only wish would be for a paid tier between 100 and 3000. If I went hog-wild and did everything I want to do, I'd probably use 200-300 a month. I would love to pay for that. But there's some loss-aversion psychology happening that makes me not want to pay for 3000 if I know I'll only use 300.
I'd give you my cc number right now if you did a 1000 zaps at $10/m.
That being said - you know your business better than I do. If it would hurt conversions of $20/m more than it would help, I get that. :)
<3 you guys though.
It seems like that program has since been limited, however, as it now redirects to a referral page[1] only. A combination of a couple referrals around the office and performing the required tasks gave us about ~650 monthly "zaps" at the time and we haven't needed more than that so far. Still, I would have happily paid $5/month or something to avoid the hassle (and be able to pay them for their wonderful product).