The provided text is a detailed overview of the IFIP Advances in Information and Communication Technology series, focusing on the 21st IFIP World Computer Congress (WCC 2010) held in Brisbane, Australia, from September 20-23, 2010. The congress, organized by the International Federation for Information Processing (IFIP), is a significant event that showcases the latest advancements in computer science and information technology. It features a variety of conferences, including the Human-Computer Interaction Symposium (HCIS 2010), which was part of the WCC. The HCIS 2010 symposium, co-organized by Peter Forbrig, Fabio Paternò, and Annelise Mark Pejtersen, covered topics such as specification and modeling, user-centered development, usable systems, social and cultural problems, mobile and web applications, and personalization. The symposium received 56 contributions, with 19 accepted as long presentations, 7 as short presentations, and 5 as poster presentations. The program included a keynote by Penelope M. Sanderson on "The Power and the Puzzles of Auditory Interfaces." The text also highlights the structure and goals of IFIP, emphasizing its mission to support information processing within member countries and encourage technology transfer to developing nations. IFIP operates through technical committees that organize events and publications, with the flagship event being the IFIP World Computer Congress. The congress includes open conferences and working conferences, each with its own focus and review process. The HCIS 2010 symposium contributed to the broader discussions at the WCC, providing a platform for researchers and practitioners to share insights and foster innovation in the field of human-computer interaction.The provided text is a detailed overview of the IFIP Advances in Information and Communication Technology series, focusing on the 21st IFIP World Computer Congress (WCC 2010) held in Brisbane, Australia, from September 20-23, 2010. The congress, organized by the International Federation for Information Processing (IFIP), is a significant event that showcases the latest advancements in computer science and information technology. It features a variety of conferences, including the Human-Computer Interaction Symposium (HCIS 2010), which was part of the WCC. The HCIS 2010 symposium, co-organized by Peter Forbrig, Fabio Paternò, and Annelise Mark Pejtersen, covered topics such as specification and modeling, user-centered development, usable systems, social and cultural problems, mobile and web applications, and personalization. The symposium received 56 contributions, with 19 accepted as long presentations, 7 as short presentations, and 5 as poster presentations. The program included a keynote by Penelope M. Sanderson on "The Power and the Puzzles of Auditory Interfaces." The text also highlights the structure and goals of IFIP, emphasizing its mission to support information processing within member countries and encourage technology transfer to developing nations. IFIP operates through technical committees that organize events and publications, with the flagship event being the IFIP World Computer Congress. The congress includes open conferences and working conferences, each with its own focus and review process. The HCIS 2010 symposium contributed to the broader discussions at the WCC, providing a platform for researchers and practitioners to share insights and foster innovation in the field of human-computer interaction.