You can bookmark by clicking the little star icon (not the colourful one, the one next to it). AFAIK you cannot follow users.
Yup it's good now.
Hmmm the picture isn't loading for me.
Oooh that is nice.
Love the use of stirrups.
Colonoscopies maybe?
Slightly related but is there a way to see when a community was created? What's the threshold for newly made communities?
That's not typical.