Board Thread:Questions and Answers/@comment-32549754-20171015022231/@comment-28905095-20171015031522

When you post a question in a forum, the normal action is that you as author automatically follows that post. This means you'll get to be notified on any follow ups.

If you post a comment on a page, it's not possible to track replies to that comment in particular, but you can follow the page in general for changes related to the page. This is done by hitting the Follow link in the bottom tool bar. (Or can be checked when editing a page)