Meantime, Columbia University has a warning for students aspiring to careers in diplomacy.
The students are being told to avoid linking or posting online comments about secret U.S. documents released by WikiLeaks.
The university says such discourse could call into question their ability to deal with confidential information.
WikiLeaks took a financial blow over the weekend when online payment service provider PayPal cut off the website's account.
Also, the site's elusive founder, Julian Assange returned to Switzerland after an American company stopped linking Internet traffic to it.
WikiLeaks has been releasing a trove of sensitive U.S. diplomatic cables over the past week.
The Associated Press Contributed to this report.