As a counterpoint to this article, I'd point to Yossi Kreinin's excellent "My History with Forth & Stack Machines" [1] which has been posted on HN before [2] and which discusses more extensively the particulars of Forth as a powerful toolbox of primitive operations, as well as the use of Forth in actual applications.

[1]: http://www.yosefk.com/blog/my-history-with-forth-stack-machi...

[2]: http://news.ycombinator.com/item?id=1680149

Since the others gave you promotional material, I'll give you a write-up that discusses the good and weird sides of it:

https://news.ycombinator.com/item?id=1680149

The weird stuff makes a lot of people decide not to use it. So, they should know ahead of time. I do think there's potential for a Forth with less weird stuff or more compatible with C. There could even be one already given a benefit of Forth is it's easy to write interpreters for it. On that note, here's a tutorial series illustrating that:

http://blog.asrpo.com/forth_tutorial_part_1