That is interesting indeed. If you go on to page 2 of the rankings* you can see that there were indeed a large number of Haskell, Python, Lisp and Ruby entries, but the top 100 (and especially the top 25) are totally dominated by C++.
The other thing I find interesting is the lack of Java entries. Java is as widely-known as C++, but there's only one Java entry in the top 100, and even in the top 200 Java is only about as common as Haskell or Ruby, and far less common than Python.