David Nugus author of a privately published study into TV / phone sex channels ( spring 2013 ) , conducted many interviews with the presenters , he found them to be articulate with considerable personality , a necessity for the success of such channels .
David Nugus author of a privately published study into TV / phone sex channels ( Spring 2013 ) , conducted many interviews with the presenters . 
 He found them to be articulate with considerable personality , a necessity for the success of such channels .