TORONTO - “National radio has now posted eight consecutive quarters of positive growth. That’s the longest stretch since Q1 of 2002,” said Patrick Grierson, president of Canadian Broadcast Sales. “What’s noteworthy is that this growth has been steady, stable and sustainable with no volatility. We’re projecting Q4 to remain on this positive pace and result in a 9% annual growth.” National radio sales in the third quarter of fiscal 2008, ended February 29th, grew 8.7% as compared to Q3 2007. ‘Radio’s resilience is a major factor in this stable growth. Normal quarterly churn is approximately 40%. In Q3, only 33%...