Thanks Mindy and Leah. I think I'm confusing terminology here.
It's not on email -- it's not for the threads I've actually subscribed to. It's within the website; when I click on "Show new replies to my posts", I get a list of links to the various topics I've posted in, whether or not I started the threads. There are some of these that I'd no longer like to show up within the 'new replies to my posts' link; is it possible to not have them appear? For instance, when in the UK, I played some of the games (i.e. "The person below me...", etc.) and thus those threads will appear in the link to "Show new replies to my posts". Can I eliminate some of the ones I no longer wish to get?