Some eBay users are artificially boosting their reputations by buying and selling feedback on the Internet auction site, according to John Morgan, a professor at the Haas School of Business.<br><br><a href='http://www.haas.berkeley.edu/news/20070110_morgan.html' target='_blank'>http://www.haas.berkeley.edu/news/20070110_morgan.html</a><br><br>