"Nothing...waste of space...get rid of that column and that may appease the masses"
It's not going away. The content of that square right now doesn't matter. What matters is everyone accept the column arrangement. I bet the related discussion thing is just a placeholder. Maybe admin will scan your post history, and put a list of your most used boards that only YOU see. Or even better, a duplicate top ten promoted stock board like off the front page. Won't that be convenient.