Agency reviews in the last several years have often led to clients consolidating their PR firms, but today's deepening recession has accelerated this trend as clients seek to cut budgets and economize.

In recent months, a number of major corporations have conducted agency reviews whereby they consolidated the number of agencies with whom they work. That has led some in the industry to attribute many ongoing reviews to a search for efficiency or integration.

Whirlpool went from working with two PR ...