GATINEAU – We heard from a good source yesterday that a trial balloon on the fee-for-carriage issue is orbiting Parliament Hill these days. The message tied to that figurative balloon apparently wonders "what if" the CBC were the only conventional broadcaster to get a fee for carriage from all Canadian BDUs. In exchange for that though, CBC Television would drop all advertising. The Corp. earned $328 million in the 2007 broadcast year in ad dollars on conventional TV, according to its annual report. The hope, continues the line of thinking, would be that all that revenue would find a home...