+ Click on your "Profile" here: https://bitcointalk.org/index.php?action=profile
+ Then click on "Show Post". All your post/comment will be show on this page. If you want to get any link of your comment, click on it. It will direct to your comment on official page
+ Format of comment/reply like: https://bitcointalk.org/index.php?topic=xxxxxxx.msgxxxxxx#msgxxxxx
+ If you want to get your link directly from topic that you did post. Click on "#XX" on right above of your post, so the link will be on your browser