You probably got here via a link to digitalgemstones.com, which has been retired.
Digital Gemstones was my original web presence when I was in high school, first learning about software engineering and website development. Since graduating from college more than a decade ago the site has sat idle, and it no longer makes sense to continue maintaining it.
Software projects that were documented on the site are primarily now on GitHub, at github.com/dimo414. A notable exception is b, a lightweight issue tracker for Mercurial, which is hosted at foss.heptapod.net/mercurial/b.
Needless to say if you find digitalgemstones.com links in the wild (like on StackOverflow), leave a comment or let me know here and I will try to update it.