As holiday giving crests, a new study by UC Berkeley and Cornell University researchers shows taht people compete in their giving to win favor and friends.<br><br><a href='http://www.berkeley.edu/news/media/releases/2006/12/19_giving.shtml' target='_blank'>http://www.berkeley.edu/news/media/releases/2006/12/19_giving.shtml</a><br><br>