Station owner Michael Zwerling does not subscribe to rating services, so listenership is unreported. KSCO solicits donations from listeners to keep it on the air on its web page. KSCO also sells programming hours to augment advertising income. Brokered programing includes that of Dr. Joel D. Wallach, a veterinarian and self-described naturopath who claims most diseases are the result of mineral deficiencies and promotes the sale of "colloidal minerals" throughout his programming. The station also broadcasts commentaries by the owner's mother on topics such as whether Obama is really an American, supporting torture of Guantanamo Bay prisoners, and calling for a military draft. Kay Zwerling also sells Dr. Wallach's supplements. The commissions that come from the sale of Wallach's products are, by KSCO's own admission, the station's primary revenue stream, and without it, the station would be unprofitable, as the station is unable to support itself through advertising alone.