What does it currently cost?

I just noticed that the POST button / process does not actually tell you this info - perhaps that would be a start (if you don't know it's costing you something, you might be more likely to hit send on your shitpost)

EDIT - it's there on hover. 1 sat.

To me it doesn't make sense that it would be cheaper to post, than to reply.. So I'm voting 10 sats (but would also support 100)