however, and a number of commentators had shows cancelled, notably Hugo Guerrero Marthineitz, who hosted the intellectual interview program, El show del minuto. The Comité Federal de Radiodifusión (COMFER) was established in 1972 to both regulate the growing number of unlicensed stations, as well as to increase state influence over the medium. The return of Juan Perón from exile led to a second round of nationalizations in 1974, including all major television stations. The Radio Broadcasting Law of 1980, which led to the privatization of 44 stations, touched off an era of state disinvolvement in Argentine radio, however, and helped lead to corporate consolidation over the airwaves. Many of these hitherto public radio stations (known by their acronym, LRA) had helped extend the medium into Argentina's then-remote far north and Patagonia. Argentine radio, was long dominated by AM broadcasting (only 22 FM stations were in service), and AM remained popular on the airwaves, even as FM stations grew to outnumber these in subsequent decades. The return of democracy in 1983 led to an unprecedented selection of news programs, and many became known for muck-raking exposés; some of the highest-rated included Magdalena Ruiz Guiñazú, Santo Biasatti, and Nelson Castro. A number of new stations dedicated to Rock music and other forms of pop culture also opened, notably Rock & Pop (1985), led by Daniel Grinbank; the station became well known in the late 1980s for its irreverent Radio Bangkok program, hosted by Lalo Mir. Easy listening host Nora Perlé (Canciones son amores), Jazzología host Carlos Inzillo, Variety show host Chiche Gelblung (Edición Chiche), and critic and raconteur Alejandro Dolina (La venganza sera terrible), also became prominent in radio broadcasting at this time. Football remained a perennial favorite on the Argentine radio, and some of the best-known announcers have included Fioravanti, José María Muñoz, Enrique Macaya Márquez, Horacio Pagani, Marcelo Araujo, and Víctor Hugo Morales, among many others. ArInfo (Buenos Aires) became the first Argentine station to broadcast online in 2001 and by 2009, 61 stations did so, nationwide. The ownership structure of both radio and television broadcasting became increasingly concentrated after the 1980 Media Law, however, and many of the most popular radio stations are owned by conglomerates, including Radio Continental (Telefé), Radio Mitre (Grupo Clarín), Radio Rivadavia (Grupo Uno), and Radio 10 (Daniel Hadad). The contentious Audiovisual Communication Services Law, signed by President Cristina Kirchner in 2009 and upheld by