AdvertisementTwitter Sets Its IPO Price, Valuing Company At Around $11 BillionOctober 24, 2013Eyder PeraltafacebookEmailIn this Nov. 8, 2011, photo, NASA fan David Parmet signs his name on a Twitter logo during a tweetup event for about 50 of NASA's Twitter followers at the Langley Research Center in Hampton, Va. (AP)
