Tava kathamrtam tapta-jivanam -- these talks and subject matters are the life and soul of the devotees, tired of suffering in this material world.
kavibhir iditam kalmasapaham
sravana mangalam srimad atatam
bhuvi grnanti ye bhurida janah
(Srimad-Bhagavatam, 10.31.9)
"These narrations, transmitted by learned sages, eradicate one's sinful reactions and bestow good fortune upon whoever hears them. These narrations are broadcast all over the world and are filled with spiritual power. Certainly those who spread the message of Godhead are the most munificent welfare workers."