I wish I could buy stock in that project because since then its popularity has soared and it has become a fully fledged project.
In terms of distributed version control, people tend to mention either Mercurial or Git.
Both project use roughly the same commands but Git has a crap load more binaries. More than 150, is that correct?
So the main pro's I see for Mercurial:
- Lack of dependence on Unix concepts (ie. Good Windows support)
- Simplicity (you'll find the code base is a lot smaller)
Also, check out Bryan O'Sullivan's book, Mercurial: The Definitive Guide.