Re: How do I know if someone has replied to my post?
I agree that a unified notification center should be a feature, however I don't think vBulletin has any sort of support for that at all. As it stands, I simply go to my username, and look at all my posts, using the icons to the left of each as a sign of which posts have developed further. It's not pretty, but it works.
Oh, and Bo: click the gear in the top right, go down to "account settings", click "notifications" on the left, then "email" in the middle. Then you can check a box to only receive security-type emails from them.