One of the great things about stack overflow is the way they distinguish between open and answered questions. Is there any plan to implement something like this on Quello?
I think Quello is similar to Quora, where everyone has their say about something. Now the question can have different persepective as well as different answer, so I dont think so Accepted Answer will work well on Quello.
I think in the future we'll see the ability to have a top answer as selected by the asker, however, I think the difference between Quello and stack overflow is that Quello would like to encourage opinions of others and different views where I think Stack Overflow you could argue its a bit more clear cut (despite people having different opinions on how). We wouldn't want to discourage them because a user indicated they found an answer they like, with that, said it's something being considered.