Commtouch Reports Spam Trends for May;
Yahoo.com Followed By Hotmail
Is Most Used Domain By Spammers
160 countries sent spam in May; 58% of the global spam was sent from U.S. sources


China hosted 78% of websites referenced in spam email, up 7% from previous month; U.S. figure was 10.1%, a steep drop from previous month's 22%

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