Oh, yes, I'm aware of Pillowfort! I was actually a pretty early adopter back in 2018 but I never really found my niche on there - like you mentioned, it's pretty quiet, and it absolutely was an uphill battle to try and shift people over even back then in the wake of the Tumblr exodus. Community building is hard! After the site went down for a while I just never went back, but it is still on my radar. I've kind of been watching it grow from afar and waiting for a good time to try it out again.