To support "Pearl Jam", the band embarked on its 2006 world tour. It toured North America, Australia and notably Europe; Pearl Jam had not toured the continent for six years. The North American tour included three two-night stands opening for Tom Petty and the Heartbreakers. The band served as the headliners for the Leeds and Reading festivals, despite having vowed to never play at a festival again after Roskilde. Vedder started both concerts with an emotional plea to the crowd to look after each other. He commented during the Leeds set that the band's decision to play a festival for the first time after Roskilde had nothing to do with "guts" but with trust in the audience.