Would it be possible to add a quick-link to postings without replies. Some people might find it helpful.
Another thing which could be interesting, and stir up some debate would be the creation of a FAQ's forum. Members could propose solutions to a variety of beekeeping questions/situations and perhaps polls could be used to serve as a guide to beeks who need to choose a response that they are comfortable with. The benefits are twofold; the current knowledge would be gathered on specific topics, resulting in a great resource and secondly, experienced beekeepers would have more time to respond to additional questions, perhaps one of the "unanswered postings" for example.
The FAQ forum could serve as a permanent mill to "separate the wheat from the chaff".
Maybe "Beesource" could write a beekeeping book eventually... with a little help from your friends.