> Many message boards have this option when posting a topic you can select to have
> a message sent to your e-mail telling that someone has replied to you.

Including this one :p

> Example is over at hardocp.com forums.
>
> I find it convenient if I don't wanna run through the board over and over to see
> if I've been replied to.

Theres a little tick box right under this 'ere text box that i'm typing into, right now!

It says 'e-mail all relies to my real e-mail address'

Check your details have an e-mail address for the board to reply to perhaps? I dunno, but the feature is definiteley here.

Pete