nobody on Nostr: Describe nostr in 2̶4̶0̶ ̶c̶h̶a̶r̶a̶c̶t̶e̶r̶s̶ ̶o̶r̶ ̶l̶e̶s̶s̶ ...

Describe nostr in 2̶4̶0̶ ̶c̶h̶a̶r̶a̶c̶t̶e̶r̶s̶ ̶o̶r̶ ̶l̶e̶s̶s̶ as many fucking characters as you like