Design Web sites Web site development 14 PHP (Computer program language) 8 Human-computer interaction 7 Computer graphics 6 Graphic arts 5 JavaScript (Computer program language) 5 Cascading style sheets 4 Computer networks 4 Electronic commerce 4 Authoring programs 3 Business enterprises 3 Computer software 3 Data processing 3 Human factors 3 Internet marketing 3 Internet programming 3 World Wide Web 3 Architecture 2 Business 2 Computer drawing 2 Computer network resources 2 Desktop publishing 2 Evaluation 2 HTML (Document markup language) 2 Information storage and retrieval systems 2 Interactive multimedia 2 Internet advertising 2 Online social networks 2