I have just now (after being here for 2 + years) started seeing/using some of the cool tools of this forum. For example, I didn't know you could subscribe to a thread without replying. And I just learned about the User CP to catch up on the latest replies to my thread subscriptions. I'm thinking about taking off the e-mail notifications now because of this. And my spam protection is so high on my e-mail, that I often don't get notifications.

What are some cool tricks/tools you use to PT?