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Even if the finite nature of the resource stocks is not the only factor that influences oil prices, speculation also plays a role in this process: peak oil, that is the point in time when oil production cannot be increased despite maximum efforts, will be reached in the near to medium-term future – indeed, some analysts believe that it has already been reached.

While annual revenue for public relations firms flat-lined from 2008 through this year, IBISWorld foresees a nearly 6 percent annual growth for the industry over the next five years. And while employment in the field has actually dropped in recent years, it's staged for a 3 percent increase every year through 2016. Gary McCormick, chair of the board of directors of the Public Relations Society of America, says the industry's recent stagnancy was due to other companies that use PR firms or independent contractors cutting back on advertising, marketing, and PR expenses.