Carl Bialik from WSJ writes "Companies are limiting employees' use of free Internet services, such as Skype and video downloading, to protect themselves from viruses, communications traffic jams and regulatory missteps, the Wall Street Journal reports. ABN Amro's global head of strategy and engineering tells the WSJ, 'I'm not allowing Skype because I don't know what it does.' Some colleges and departments at Cambridge University also ban Skype. The limits affect executives as well as the rank-and-file, the WSJ finds: ' "I used to think nothing of checking my Yahoo mail several times a day," says Global Crossing Chief Marketing Officer Anthony Christie. Now that he can't, his long workday makes it hard to avoid using his work email account for personal messages, he says.'"