There’s no shortage of companies turning to Twitter and other social media websites to promote their brands. But the trend hasn't created many new jobs—at least not yet.

Companies must walk a fine line when using social media Websites like Twitter.

As far as stock prices go, supermarkets are still feeling the recession pain — especially in the US. But for some of them, the crisis has been a unique opportunity to woo customers into a relationship that they hope will become permanent.

Unemployment hit 8.9 percent in April and some predict that number could climb to over 10 percent in 2009 as major companies streamline operations to combat the recession.  But how far can this streamlining really go? For many companies, revenues hinge on worker productivity, and for most operations, per-worker profits and revenues are many multiples of average employee salaries. The measure of revenue per employee also helps shed light on a firm's money-making efficiency and likelihood it will retain jobs. The best companies require  the least number of workers to make the most money.