Early in 1997, U2 contacted Microsoft to give U2 an presence online during the duration of the PopMart tour. So in April 1997, PopMart Online was born. Headed by Sebastian Clayton, it attempted to give U2 a presence online using the latest in web technology, including live chats with the band over IRC and webcasts of the PopMart tour that included live audio and video. The site was closed after the 3rd leg of the PopMart Tour in December 1997, although the site had lay practically dormant since August 1997. I have obtained some of the content of that site and from here you can view a lot of what was originally on what used to be u2popmart.msn.com.
Included here are links to chat transcripts, interviews, a discography, a biography and other pictures.