[Distutils] Using eggs as Plugins

Does anyone have any experiences they would like to share about how they use eggs as plugins in their personal projects and at their job? It would be great to know what people used before, perhaps a simple inspection of __init__.py directories, and how eggs have improved their plugin architecture. If you work at a Python centric company and would like to be profiled in an O'Reilly book on your use of eggs, please contact me as well. Noah Gift