You will receive a notification only if someone answers your comment by using a [`@yourname` comment reply][1].

Not everyone uses it though, so I suggest you use it even when you don't need it. For example, even if you know the person who posted the answer you comment on will get notified, use the `@hisname` when you write your comment, to suggest it's the way he got notified, so he will use it too (not needed with a regular user though, but it can help with new ones).


  [1]: http://meta.stackoverflow.com/questions/43019/how-do-comment-replies-work