How do I know if someone replies to my post?

To see replies that quote your post, look on your Quote Notifications page.

 

To follow the discussion in a particular thread, which will include replies that quote you, replies to you that don't quote you, and replies to other users, see How do I use thread subscriptions?. You can ask for email notifications of new posts in subscribed threads or you can go to the main page of your User Control Panel to see a list of your subscribed threads in which there have been new posts.

 

You can also identify threads you have subscribed to by a checkmark in the New Posts display or the Forum Spy.