A) Charity search by location - by State, for example. 180+ in the US
is a bit to report to the user, especially if they are looking to help
locally
B) Receipt look up by receipt ID - something I'd personally like to
let users do through my application
C) Search by name (and/or description) - I bet the user sometimes
knows the organization name or part of it, but doesn't necessarily
know the ID #
You rock,
Kevin