A few small comments:
in reply to Why Perl is a Valid Choice
* fastcgi is not purely used for perl. Eg. it is one of the serving methods of choice for Ruby on Rails
* my experience is that jobs.perl.org is in fact a poor indicator of the availability of perl jobs. On any given day, cwjobs.co.uk lists way more perl jobs (with way higher salaries) than jobs.perl.org in banking, telco's etc.
Many of your points are about the benefit of open source agile environments. I am happy for anyone choosing Ruby or Python or Perl. They are relatively equally valid choices. I think the one choice that is not valid is Java.
Just my opinions!