On the left side of the screen, at the bottom, you will see a menu called Services:
From the Services menu, choose Preferences. This will bring up the User Preferences screen:
Here is where you can decide whether or not to receive the daily digest, a summary of WEBoard activity each day.
If you want to see what the daily digest looks like, click here for a sample.
If you no longer wish to receive the daily digest, change the value for Receive Daily Digest of WEBoard Announcements? to No, then click on the Change Preferences button.