I respect DisgruntledGoat´s opinion about that, but I think avatars should be left of the question , with the option to move answerblock and/or the votingblock to the right.
The reason for this is, that it is kind of commounly used that way. For example if the facebook freaks want to feel "at home", left hand is the indicated place. In US only are about 150.000.000 users at facebook, 1 of 2 inhabitants more or less.
The other reason is, that that way it would be easy to change it into "Avatar" "said" followed by a speach bubble including the question / answer.or similar..
If the avatar feature / usertitles feature and later the badges feature is part of the script, it will have more community style, where the "who" is very important.
I understand that some people here like stackoverflow, but it is a real (excellent) niche solution for very experienced web users. To make Your script widestly acceptable for normal people I believe the community optic is very important.
However, as long as the avatar comes in normal answerscountbox size, I am happy.as I can move it through css. Much more important for me are uploadable avatars, so people do not need to go somewhere else to get a personal one.
Its just an opinion, thanks in any case
After asking around here, everybody thinks different. So the very very best solution would be the option to set the horizontal order of "Question" "Voting" "Answers" "Avatar" freely including show / not show.