Builder.com made a survey about web technologies. Which are used the most/least. Very interesting. It's based out of 557 people. Here's what it covers:
General Technology Skills covered things not necessarily tied to a particular technology or vendor: e.g., XML, database design, and Web services.
Programming Languages included a collection of 13 programming languages and technologies like Java, Visual Basic, and COM.
Web Development covered languages associated with Web application development: e.g., ASP, Flash, and PHP.
Databases included the results for each of the different database systems we asked you to rate yourself on.