LANHAM, MD: Vocus reported $84.6 million in 2009 revenues, a 9% increase from the prior year. But the on-demand PR management software creator ended the year with a loss of $2 million, following four straight quarters of negative net income.

Vocus CMO William Wagner pointed to the economy and an investment in the company's salesforce as reason for the decline. In 2009, Vocus grew its sales reps from 135 to 175.

"It all boils down to the economy," he said. "We know that it makes sense to ...