I will be writing a white paper on "where to put things" and how to use the features and tools of SPS 2003 - some best practices as it were. I'll be writing this for Microsoft and it should be out in the September time frame.

In the meantime, here are some rules of thumb:

1. If it is collaboration in nature, it goes into a site.
2. If it is organization/aggregation in nature, it goes in an area.
3. If it is broadly consumed, it goes in an area.
4. If it is locally consumed, it goes in a site.
5. If it content that changes frequently, the development of the content goes in a site or workspace
6. If it is conten that rarely, if ever, changes, it goes in an area or it isn't brought into SPS and we use the indexing feature to "find" it in the portal

These are working concepts, so please ask questions if needed.