- Introduction to the source base for new programmers
- General documentation (not the API documentation per-se, but more tutorial like things)
- Lists of staff / who's doing what and how to reach them
- Notes / resources / articles that explain concepts used in the software
- Documentation of the build process and the filesystem layout of the codebase
Other things I usually put up there are
- Planning / todo lists
- Information that is interesting for others to read
- Everything else that I feel should be shared
