I think the best way to think about this poll is not simply
what language is used, but what it requires to actually
develope a web application in these languages. All need
something to actually run the code(except for c, c++ I think).
The reason that perl is the highest is that most webservers
have perl installed, and CGI.pm is part of the base install,
and many have mod_perl, as opposed to whatever is needed
to host asp, jsp or php pages, which I think speaks
very highly of perl for web based applications.