Hosted would also be good though, I think there are a whole class of people who don't care all that much who has access to their data so long as they could self host it (or have someone else host it for them) if the service ever stopped running.
Because those services are 3-10 orders of magnitude larger than a startup running open-IFTTT as a service? Because they already have critical business operations interacting with these large(r) services?
(Just two reasons I could imagine. But I get your point... especially with my recent sadness over Google Reader.)
Hosted would also be good though, I think there are a whole class of people who don't care all that much who has access to their data so long as they could self host it (or have someone else host it for them) if the service ever stopped running.