Joshuah Bearman alerted me to David Dixon's amazing audio archive website, which has links to audio files that people recorded at home and unwittingly sent to Napster.
This was right around the time that Napster was just beginning to penetrate into the average computer user's lives. At the same time, an audio utility program called MusicMatch Jukebox was also being widely used, since it was often pre-installed on off-the-shelf PC's. MMJ allowed you, among other things, to make recordings using the cheap microphone included with the PC, and save the file in mp3 format. If you didn't give the audio file a name, it assigned a default name "mic in track" followed by a number. Now if you were also running Napster, and you were careless enough to be sharing everything on your computer (which *many* were), then anyone also running Napster could just do a search for "mic in track" and find and download these personal recordings, usually without your knowledge.
I am that guy. I've amassed many, many hours of these recordings, which provide endless voyeuristic entertainment. Typical recordings were of people singing, rapping, or playing along with the radio (often badly), kids practicing their school book reports, audio love letters, kids being silly, and so forth. One of my finds was a 14-minute-long recording of a guy praying very fervently and emotionally, even lapsing into glossolalia. I've posted many of my favorites on my webpage, for free.