Here are some Curetronic modules all named "0" with the same knob picture that all aren't real modules (there are no Curetronic blind panels):

https://www.modulargrid.net/d/curetronic-0
https://www.modulargrid.net/d/curetronic-0-
https://www.modulargrid.net/d/curetronic-0--
https://www.modulargrid.net/d/curetronic-0---
https://www.modulargrid.net/d/curetronic-0----
https://www.modulargrid.net/d/curetronic-0-----

That is no spam. That where some faceplates I guess the manufacturer didn't want to see on MG, so he uploaded default images to overwrite them. Modules are now unlisted.