http://bit.ly/gOAXRa The iPad 2 was definitely the most popular event on Friday of SXSW 2011. Based on a visual estimation, more people waited in line than attended Tim O'reilly's keynote (not that Tim didn't have great things to say). Here Kelly Clay talks with some of the people in line, where one hour after the SXSW pop-up Apple Store opened, the line still extended more than an Austin city block.