The "feed" on your QuitNet homepage shows you quit statuses from all other QuitNet members. At the very top of your feed, you'll see five built-in filters:
Everyone (default) -- show Quit Statuses from all other QuitNet members
Friends -- only show statuses posted by people I am following
Craving -- only show statuses posted by QuitNet members who are craving
Questions -- only show statuses posted by QuitNet members who have a question about quitting
Anniversary -- Find members who are celebrating a quit anniversary.