There is a checkbox to allow you to automatically receive an email when someone replies to a posted message.
So... you don't have to check this forum for replies, an email will tell you when you receive one.(It also provides the capability to click on a URL to have the reply opened directly into your browser.)
I.e. one click when you enter a message lets you see all replies by two simple clicks (one to open your email message, the second to open the URL) [and some folks think the Internet is hard to navigate!] =[;>)