While I understand the philosophy of the 'slow web', I can't see it creating successful websites that depend (at some level) on return customers.
The other option for traction would be search engine traffic, and that isn't (likely) to happen with ask.io. (A third traffic option is direct referrals, but they'll be specific to a week: hey everyone, send my wife a card: ask.io! .. and thus wont create return traffic)
The slow web is better for disseminating unchanging information - like a dictionary or encyclopedia - that's needed on-demand.
I'd be interested in OP's thoughts on his Slow Web philosophy and creating traction with ask.io.