[hello_moto]

This is a weakness of user-generated-contents. We have seen this on Reddit and Digg and now Wikipedia.

[nickb]

That's true but at least Digg and Reddit have been working on busting up these "mobs" while Wikipedia has been supporting them.

[gscott]

This is more like dmoz, once great but too few developed too much power and never let go. Now unless if you know the right people it is impossible to get listed on dmoz.