Dan,
Go to "Update Profile".
Click on "Notifications" in the column on the left.
Check the boxes for"Email" and for "On site alerts".
Click on the "Primary Notifications" tab at the top of the page to the right of the "settings" tab.
Scroll down to the bottom under "Influence Notifications" and check off the boxes for what you want to receive.
Make sure you don't have any of the other boxes checked.
All I check off are the 4 items listed under "Influence Notifications" plus the "Administrative Events" box.
Hope this helps.
Jim