I think it’d be a great idea for Newsblur to make a channel for IFTTT, especially if users wanted to have their saved stories mirrored over to a bookmarking service that has a search feature (since Newsblur currently lacks one).
Also–and I can’t stress this enough–the only dedicated RSS reader with a channel on IFTTT is Google Reader. It would be a great way for Newsblur to get a leg up on the competition!