Bad blood? (Canada).

The Canadian Blood Services' ban on donations from sexually active gay men has at least one man's blood boiling. And he's not afraid to let them know--through anonymous E-mails.

The man sent two messages to blood officials this summer. "I had sex with men in the past. I was tested and am clean. I gave blood," he wrote in the first. Then in a second message he added: "I'm still going to give blood."

In an effort to determine the legitimacy of the man's claims, a court ordered Internet portal Canada.com to trace the source of the E-mails. But according to Ian Mumford, the blood agency's vice president of operations, "We've reached a dead end."

The supposed donor, identified as "John Doe II" in court documents, has apparently ridiculed the agency for its ban, which is based on the belief that gay male donors are at higher risk for HIV. (The American Red Cross has a similar ban in place.)

"Your policy is based in ignorance, hate, and stupidity," one E-mail read. "I hope thousands of gay, lesbian, and bisexual Canadians who gave blood without telling you their sexual histories come forward too."