From a product use case perspective, Jelly is like Aardvark for mobile. Aardvark was a bit early in terms of leveraging the various social networks and did not have mobile at its heart. I was an active use of aardvark and was really disappointed when Google shut it down. Heres hoping this product takes social/mobile Q&A forward.
Agreed, clearest comparison. When Aardvark worked it really was great, and I would imagine that one of the biggest usecases for a product like this is asking questions in a new location so a mobile-first approach makes a lot of sense.