I explicitly said that it's not about keeping track of who's done whom a favour. I'd even say that each day, any old favours get reset and hidden from view.
Ah, my mistake. I have no idea how that managed to sneak onto the site. I'll get it changed soon.
@ollysb, @nodata: Sorry about that. I was honestly confused why people thought it was about keeping track and kept bringing it up when I'd said it wasn't. Now it all makes much more sense
This is the copy that's making people think along those lines. If it's sending the wrong message then this is the bit I'd change.