One of the new features that came with the update of the Blogger software is the ability to lable posts. The lables will now allow you to browse all the posts with that lable. Just click on the lable link and you will see a list of all the posts with that lable. So if, for instance, you want to see all the "Alumni" related articles you can click on that lable and check out the list.
We have not gone back and added lables to all the older posts yet but we will be adding them as time permits, and we will be putting lables on the new posts. If you think we have missed one just let us know and we'll try to get it added. We also are looking at ways to show a "lable cloud" so you can see all of them together.