I've mentioned a few times before about a zero replies forum or some way to search for zero replies as well, but after thinking about it I would like to see some way of seeing if a thread has been resolved or not. Many times I've asked a question, got 3-4 replies, but have not got a feasible answer, which means a lot of people won't even look at the thread as they think it has already been answered.
A checkbox would be nice, which could be checked when a question is answered correctly, setting the background colour of the post to a specified colour for Answered Questions, so that it is easy to identify threads which have not been answered.