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.

--xPhase