I know Chelsea Manning is on here somewhere, I think she's probably actually active, but gosh if I have no idea how to find her and follow her.
Calvin keeps saying "upstream" and if that refers to the flagship node(s) as far as I can tell, they aren't really upstream, they just happen to be big and being peered with that node doesn't exactly do anything for us for content on smaller nodes. (And, xychelsea is not on that specific node anyway.)
To follow Jeph Jacques, who also isn't active any longer, I had to type firstname.lastname@example.org to get it to show in search. So, If I used an external search tool to look up a person and then typed it in, it works, but I can't reliably just type in a name and find someone, at least not yet.