BOZEMAN, MTThe few people close to Mitch Delomme say that he doesn't realize the implications of his new podcast, an agonizingly personal 40-minute digitally recorded capsule of news, information, and trivia about the chronically lonely pizza-delivery man. 'I wanted to share something about myself,' said Delomme, 48, who in the course of his life has been heavily involved in ham and CB radio, personal home-page construction, and participation in late-night community-access cable. Delomme's podcast is currently available on all major subscription links, where it has attracted no attention. 