(tiobe-index '(dec 2011))

http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html


   DECEMBER 2011 Programming Community Index

   11. Ruby                 1.494% -0.29%
   12. Delphi/Object Pascal 1.245% -0.93%
   13. Lisp                 1.175% +0.11%


Lisp is growing and Ruby is going down fast. So, what are you waiting to learn the best language ever created?
Imagine a world where Lisp is the dominant language. The software would be years ahead of what he have now.

>>3
It measures the "programming community". So it's perfectly legitimate to use search engines and Alexa to get that kind of data.