Posted: 03/03/2013 at 11:00
Click on 'latest posts' then look along that bar to the right and you'll see Followed Threads - that'll give you the threads you've posted on.
And in Settings, you'll find My Messages, so if anyone has Messaged you you'll find them there.
And somewhere in Settings you can set it up so you get an email when a thread you've posted on gets another post, provided you've not disabled it by un-ticking the box at the bottom of the thread.
Hope that helps