Nothing if you have the time. One of the reasons I love Stackexchange is because its an aggregation point for domain-specific knowledge that doesn't fit into a Wikipedia sort of model. I hope Stackexchange grows into a Wikipedia-esq peer of sorts.
There are rarely questions that I'm willing to wait undefined amount of time to get an answer to, if the other option is to use little more time to get the answer right away. When I'm on the road, which seems to what Jelly is targeting, I'm interested in things right there. E.g. "I'm hungry in downtown Seattle, what's a good sushi place?"
I wish Jelly luck, but for questions like that the first app that comes to mind is Yelp. It's going to take Jelly a lot to push them from the top of that hill.
I don't know if it will take a lot. Yelp seems to me to be in a fairly precarious position. Localinfo sites are highly dependent on data-entry, and the industry and its users have recreated these databases over and over in the past 15+ years. Usability and relevance is key, and no site has solved that problem yet.
IRC conversations aren't googlable after the fact (I'm aware of channel loggers but they don't solve the problem, not really).
Every time I get really deep into some new programming language or tool or technology I hang out in the IRC rooms for it for a bit to see what the common questions are. Within a few days I become a primary answerer of questions because everybody is asking the same questions and I can deftly answer 90% or more of them, even knowing very little about the technology in question.
When you have a question, the first thought you should have is that somebody has asked this question before. Not that there should be an IRC room or a forum or a subreddit or a red phone waiting for your beck and call. Frankly this sort of self-centred "SOMEBODY ANSWER ME NOW" complex strikes me as selfish and the last thing I want is a social network founded on the idea of tracking me down to ask me things that can be answered with very little real effort on either of our part.
Stack Exchange encourages this selfish behaviour (pls send me teh codez), but at least it gives us with the Power of Google a way to access other peoples' selfishness, which is nearly the best of both worlds.
