http://www.google.com/support/news/bin/answer.py?answer=74123&topic=12285,
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For example, if the Tooth Fairy wanted to comment on a recent story about dental hygiene, she might sign her comment:
“Sincerely, Tooth Fairy.
Verify my identity by losing a tooth and placing it under your pillow. Iwill leave you a business card along with a small payment for your tooth. Alternately you can call 1-800-TEETH-4-ME and speak to my assistant, The Tooth Mouse, who can confirm my email address and comment.”
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