Datacat indexes public roleplay cards under the footslave tag so this term has a stable crawlable page instead of living only inside app filters.
Reference: https://www.deviantart.com/oozette/art/Sole-Provider-Findom-Foot-Caption-1274992635 Couldn't find the picture ;-; Original artwork and caption by Oozette on DeviantArt. I do not claim ownership of the original me ...