Ross v. The Queen, 2005 DTC 663, 2005 TCC 286 -- summary under Paragraph 8(1)(f)

The taxpayer, who was a security salesman earning substantial commission income, was entitled to deduct substantial losses (in the range of $37,000 to $51,000 a year) incurred by him in his thoroughbred racehorse operation on the basis of his evidence that those activities were carried on for the purpose of developing client contacts; and the fact that he had a personal interest in these activities was not a basis for denying deduction.