Web Holiday Sales Off to Strong Start &lt;p&gt;\&lt;/p&gt;&lt;p&gt; By Lisa Baertlein and Emily Chasan&lt;/p&gt;&lt;p&gt; SAN FRANCISCO/NEW YORK (Reuters) - U.S. online shoppers,\who set spending and traffic records on Thanksgiving Day and\the "Black Friday" that followed, were expected to break new\ground again as they returned to work on what some are calling\"Blue Monday."&lt;/p&gt;