Yeah, but why it would be inefficient?
Entry cost is negligible and the need of open thread is very visible.
I would rather say that there's no market because there's no demand: nobody cares that much about gaining that karma. Or maybe it's not a high status activity.
Maybe I've taboo'd non-MrMind's from doing instead and legitimised a kind of proprietary right to it to you!
Perverse incentives are everywhere! ;)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.