Student generated glossaries

One aspect of our open source VLE that I am really keen to develop is that of student-generated glossaries where each student writes a short(ish) glossary entry on a particular topic. The entries can be reviewed by students and edited in a wiki-collaborrative spirit. Apart from main subject glossaries and topic based ones such as a glossary on unemployment, I would love to hear from colleagues on ideas for other glossary projects. Some of those mentioned at the conference at the moment include:

Chancellors of the Exchequer
Types of economic policies
EU economies
Economic shocks
Major economic events