An easier way is this: When you hit Reply, scroll down to the Additional options box, and there is a drop down menu titled Notification Type. The default setting is daily email notification. You can choose Do not subscribe in that menu.
You can also go to the Quick Links tab on the menu bar on the top of every page, and click Subscribed Threads. Then if you want to delete a subscription, you can click the box next to the thread name, then go to the bottom of the list where it says Selected Threads: and click the drop-down menu and choose the option you want.
Hope that helps!
Drive it like you rented it, not like you stole it. Cus if you stole it, you'd be driving 5 mph below the speed limit and using your turn signals.