As I see them on this new toy.
At the bottom of the entire list of subjects there is a link where, if you click, you'll get an e-mail telling you when any new post has been made. I tried this and got 4 e-mails in 5 minutes. This may not be great.
But, if you are in one subject and comment on it you can click an icon telling you when something has been posted on THAT SUBJECT ONLY.
If you guys find fun or useable items as you go along please point them out.