I suspect if used properly they are supposed to be like meta tags, allowing a person to tag it with the items the post involves.
So as an example if this post is about time formatting then I could include tags such as date and time, time, date
and so on so that in the future people could search the forum for all the posts with particular tags.
Just a suspiscion though.
And when I click on "My Duke Stars" I get this:
This server has encountered an internal error which prevents it from fulfilling your request. The most likely cause is a misconfiguration. Please ask the administrator to look for messages in the server's error log.
Nice, Glassfish! You're gonna be a winner in the marketplace!