I played with io some time ago as it was one of the languages covered in Bruce Tate's "Seven Languages in Seven Weeks" which give an introduction to seven progr

I played with io some time ago as it was one of the languages covered in Bruce Tate's "Seven Languages in Seven Weeks" which give an introduction to seven programming languages (Ruby, Io, Prolog, Scala, Erlang, Clojure, and Haskell) each with a different philosophy. Io seemed an interesting proof of concept, but are you actually using it for a real project or just to explore?