I don’t think I’m being conceited to think that the 2006 marketing campaign “Ask the Planet” for Yahoo! Answers paved the way for yesterday’s online townhall Q&A Obama
http://www.whitehouse.gov/openforquestions/
Here is a list of all the Celebrities that have used Yahoo! Answers as a public invitation to ask them questions or answer a question they posed.
http://en.wikipedia.org/wiki/Yahoo_answers#Special_guests