I mainly use it for keeping up with family but all I really post "publicly" (just to my friends) is photos of my dolls/ponies, my daily photo (I'm doing 365), and... "share" (I think that's what its called?) photos of Yellowstone/rescued bats in care.
Most people probably get sick of it and delete me xD Its a great way to weed out people who really don't care at all.