TORONTO - Telehop Communications (in the market as 10-10-620 and others)showed declining revenue and income in the first half of 2007. The company's revenue for the six months ended June 30, 2007 of $9.6 million represented a decrease of approximately 5.7% over the same period in 2006. Long distance is a skinny-margin business and Telehop must rely on a constant marketing push, meaning total operating expenses as a percentage of revenues for the six months ended June 30th remained consistent at 92% compared to '06. Net income for the first half was $451,814, compared to $483,785 for the same period...