Whoever made this poll is a bit... ummm... clueless.
DHTML does not exist except in the mind of marketers. All it is is HTML + DOM + JavaScript.
XML is an interoperable database standard. Nothing to do with web pages.
XHTML, which is a reformulation of HTML to XML syntax (and wasn't included in the poll), has already been declared by the W3C as the future preferred web markup language.
Flash is not "many languages in one". It is, at best, two-- a timeline-based animation tool, and ECMAScript (aka ActionScript, aka JavaScript).
CGI is not a language. It is, as its acronym specifies, a common interface between web pages and server-side executables. This is often Perl, but it can literally be any program on the server.
If ASP is in there, where's
JSP?
The scope of this poll is too scattershot to derive any meaningful results. We've got server-side and client-side technologies mixed together... user interaction vs content generation technologies... ack!