We've been having a fortnightly challenge for a while now, but recently the attention devoted to it has appeared to drop off. Not only are people posting less questions with the topic challenge in mind, but less of our experienced users seem to be around/willing to update the challenges regularly (last challenge dragged on for an extra week, and this one was supposed to be ended yesterday).
Not only that, but as Green pointed out to me, the challenge's initial goal of generating more questions seems less important now that we have so much more site activity. We also have a lot of new users who either don't know about or don't care about the challenge.
So, I'm here to ask the hard question: is it time to end these challenges? Should we throw in the towel, and if not, who will step up to continue to manage this? And what can we do to get more users to participate?