GitHub's annual data challenge invites participants to create innovative visualizations or analyses using publicly available GitHub data, with entries due by August 25, 2014. The competition encourages creative interpretations and requires submissions to include code or documentation explaining the data used and the process undertaken. Participants can utilize various data sources, such as GitHub's API, the GitHub Archive, Google BigQuery, and GHTorrent. Entries will be judged on innovation, accuracy, and completeness, with the top three winners announced in mid-September. The grand prize includes an all-expenses-paid trip to a data visualization course by expert Edward Tufte, while second and third place winners receive cash prizes of $500 and $250, respectively. Winning entries and profiles will be featured on GitHub's blog, and inquiries can be directed to [email protected].