Mastodon but not nearly as much as Lemmy.

Bookwyrm but not nearly as much as Mastodon.

I really wanted Bookwyrm to be more useful for me. But it’s really not geared towards what I want in keeping track of books. ymmv

But… no container is truly empty.
Usually they contain air, but even in space there’d be one or two molecules banging around inside.
You’d never see anything.

This.
Free gravel for life is OP! (probly gets nerfed in the next update)

I too assume it’s 7" from center of mass. So not even beyond the boundary of my body.