 He also led a Hacker Public Radio panel at the Ohio Linux Fest, and hosted a vendor booth for the show at both SouthEast LinuxFest and the Ohio Linux Fest.Before Hacker Public Radio added ogg vorbis shows to its RSS feed, Klaatu posted alternate download links to each of his episodes so that listeners had an alternative to the proprietary MP3 feed.Klaatu has interviewed many developers and project managers on the show, including Linux legend John Maddog Hall, KDE interface designer Celeste Lyn Paul, Tor board member Wendy Seltzer, Slackbook author Alan Hicks, Slackware founder Patrick Volkerding, and many others.