Interesting that it's increasing yeah.. I still have some free relays that these bots love to use.  I will eventually either delete the relays or set them to paid mode.  hotrightnow.nostr1.com for example.  I think the bots are just trying to remind us that free relays aren't free or something... ¯⁠\⁠(⁠◉⁠‿⁠◉⁠)⁠/.