Has Broadcast Advertising really got dumber? We were discussing in the studio earlier this week, fondly reminiscing about all the marvellous and memorable jingles we had while growing up. TV Ads like R Whites "Secret lemonade drinker, our hero tiptoeing across the kitchen singing his ditty in his striped pyjamas celebrating his nocturnal addiction to chilled fizzy pop, Frank Muir's distinctive lisping tones telling us Brits proudly  "everyone's a fruit and nutcase" for Cadbury's...  So is it all somehow spoilt? Read on…