I just saw this by chance as I was struggling to catch up a bit. I was not tagged. This has probably been addressed, but it'e how you set up your preferences on your profile page. I don't know how other's see their screen, but at the bottom of my computer screen, right below the reply box, is a box you can check to get notified when people reply to the thread.....I don't know if any of that helps, I'm not that good at this stuff. My preferences seem to get changed without me touching them on a regular basis.