Madge Bertha Weinstein (born March 30, 1949) is a fictional Internet personality who maintains Yeast Radio, which has developed a cult following and is among the 50 most-subscribed-to podcasts. Weinstein is the creation and alter ego of underground filmmaker Richard Bluestein and was described by USA Today as "representative of the type of over-the-top content that would never see the light of day at a mainstream media outlet".