Of radio's ten most popular programs of this past season, three of them are the so-called "giveaway" shows. Their audience numbers about 35 million people, or one-quarter of the population of the United States. That, I venture to say, is a lot of people! And I might add that bitter experience has taught us people in radio that millions of listeners do not congregate by their loudspeakers to hear something that bores them stiff.But now our bitter critics, who have always agreed with this thesis of "No entertainment -- no listeners," rave and rant that good talent cannot compete with free refrigerators. I say -- "Bosh!"