(AP) -- A vast warehouse on Facebook's Silicon Valley campus is buzzing as tech industry luminaries, politicians and company employees gather for a town hall meeting with President Barack Obama.
House Minority Leader Nancy Pelosi posed for pictures with young admirers before Obama's scheduled appearance Wednesday with Facebook founder Mark Zuckerberg.
Consumer review site Yelp.com co-founder Jeremy Stoppelman shared thoughts on how he believed social media could help small businesses.
Members of Congress and state government mingled with hundreds of fresh-faced Facebook workers who were getting a break from their day-to-day project at the company now valued in the tens of billions of dollars.
The president is expected to answer questions submitted by the site's users. He will be the first sitting head of state to visit Facebook's headquarters.
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