zlacker

I understand the urge to make software perfect; but really a usable system need NOT be fair, democratic, open and with set rules that may be debated upon (e.g. www.xkcd.com: We don't ask for democratic control over what comics are "on-topic". Yes, I know it's a personal site; but consider: would you ask 37Signals to change their blog to your liking?)

What we really need is a system that works most of the time. The cost of a false negative with down-voting (losing a genuinely insightful article as off-topic etc) is simply too high, IMO.

As regards the comparison with Stack Overflow: I find it rather pointless; the sites exist to serve different purposes altogether.

Perhaps you could rethink your initial thoughts given all the comments above and provide an even more interesting analysis of how user behavior is modified by the presence of certain features... :)