Business Use of Twitter, Facebook Exploding

From CW: I am a bit surprised that these are seeing very widespread use. Article also covers some of the privacy and security watchouts. ' ... People using Twitter to get the word out about their company, sales and promotions jumped more than 250% from this past spring ... The number of companies using facebook for such tasks grew by 192%, the study found. The report said that workers are using social networks as promotional vehicles both with and without management knowledge ... In the same time frame, market leader Facebook saw its already impressive market share increase by 194%, letting it easily maintain its recently attained place atop the U.S. social networking market. ...'.