[zo1]

I think they're referring to the fact that you using the word "stock" in your name is a bad thing. I.e. searching for GratisStock just like LibreStock both yield search results that take me to the "big" stock-image sites, with the keyword being search. I.e. Stock images for keyword Libre, and Stock images for keyword Gratis.

Hopefully it changes if your site picks up steam.

[davegri]

I literally couldn't find a better name that wasn't taken or meaningless, open to suggestions

[Raphmedia]

LibreStock makes sense. I read it as "Libre de droits".