Just to let you know that sometimes when you first sign up here you will automatically be set to "Watch Topics" this basically means that whenever someone replies to a post of yours you will be sent an email.
Yeah I know this sucks big time and if your not careful you could end up with 100's of unwanted messages.
So to sort it out goto your profile
click on the "topics being watched" tab
and just simply remove all topics being watched.
Then got My Profile/
Preferences
The sixth option from the top is the "always notify me of replies" option
select "NO"
That prevents all topics from being tracked
For some of you it might not have been set as defult but thought id post this incase.