Which announcement categories am I signed up for?

You can check your subscription settings from your Control Panel.

From the home page, LOGIN TO YOUR CONTROL PANEL.
On the left hand menu, expand the section called "My Account Settings"
Scroll down to review your settings.
From there, you can review your Receiving Categories
Look for the cell that says: "Choose the Categories of Announcements You Want to Receive"

You can also change your subscription from here.