Randall's ESL Cyber Listening Lab

Randall's ESL Cyber Listening Lab offers English listening comprehension activities organized by level, from basic to academic, along with grammar lessons, life stories, language games, English idioms, culture videos and vocabulary quizzes. A Self-Study Guide organizes activities by topic, and ESL Study Paths guide learners through a structured sequence of lessons, alongside speaking events and tips for teachers, providing online English listening comprehension activities for ESL and EFL learners since 1998.

It carries half-page ads priced per impression through auction, in US dollars. Its ads.txt lists 22 ad system lines, 10 direct and 16 through resellers.