New and old folks, if you're wondering about the "Lists" people are mentioning -- reload the site so you see the main menu (that disappears once you start viewing threads). The link is there:
Follow
Now give your list a name
Click the top right to expand the menu and pin the column and edit the people you want to include.
Search by name and hit the + to add them.
The #FismanSentMe folks can start building their list by searching that hashtag. Pin the list column first to make it easy to copypasta their usernames.