As the Web has become a major source of information, techniques and methodologies to extract quality information is of paramount importance for many Web applications and users. Data mining and knowledge discovery play key roles in many of today’s prominent Web applications such as e-commerce and computer security. Following the success of MAW08 in Okinawa Japan, MAW09 in Bradford UK, MAW10 in Perth Australia, MAW11 in Singapore, MAW12 in Fukuoka Japan, and MAW13 in Barcelona Spain, the Seventh MAW aims to bring together scientists, engineers, and practitioners to discuss, exchange ideas, and present their research on mining the Web.