Don't get me wrong, I like this community for what it is, but posts can be a playground for smartarses and jokers, which can probably deter people genuinely looking for help or advice. The meta/in-jokes and non-helpful comments which can dominate can push new users away.
Allow users to tag a comment as helpful/on-topic. Allow users the option to sort by helpful first. Allow users to only get a notification if they get a helpful comment.
grabs popcorn
Mostly people know what they are getting into when looking for advice on OzBargain. There’ll usually be some helpful comments, along with the critical and the witty/not so witty.