Glad you like it! I think it has the potential to be better than other forum software but of course it's not perfect :P.
As for the Answer thing, this is what I was thinking with the current design: in the list of questions, there is a part where it says how many Replies were gotten and that counts how many "answers" were submitted. To the left of that it says "No Answer" if an answer has not been selected as the correct answer or "Answered" if one has been selected as the correct answer.
I am struggling with the best way to show this because sometimes, as happened with a couple questions already, there is a correct answer for the question but the user doesn't come back and select the answer. So, I want people to know that Answers exist for the question. But, other times, there can be many replies but none of them actually solve the problem.
Maybe a better way is to change "Replies" in the Question listing page to "Answers" and then change "No Answer" to "No Answer Selected" and "Answered" to "Answer Selected".
Or Just change Replies to Answers and remove the Answered/No Answer part.
I'm not sure what I will do but I want it to be as clear as possible so let me know your thoughts on that.
And, for selecting an answer to your question, did you mean how the answer then appears twice on the page? I figured that that would be nice if there are lots of answers that might be voted higher up (the answers section is sorted by number of votes each answer gets) but the actual selected answer should be clearly visible at the top. It does seem odd when there aren't that many answers on the page though.
Do you think it would be better to remove the separate "answer section" and just highlight the answer within the list of answers but make sure it appears at the top of the list but with a grey background so it's still easy to identify the selected answer? (that may sound a little confusing :/)