How do I stop email messages from people replying to my post?

I went to preferences and alert preferences but didn't see anything about this

 

That means you're watching that thread. Tap your user name in the top right, select preferences, and uncheck "automatically watch threads". I think you can 'unwatch' threads here: forum.tabletpcreview.com/watched/threads

 

forum.tabletpcreview.com/watched/threads
On here, what do I actually click to unwatch a specific thread?

 

First "show all watched threads", then hit the little checkboxes next to each thread, then click the drop down menu "with each selected thread" and from the options in that menu choose "do not watch" or something like that.