LOS ANGELES — Movie fans have bookmarked the Facebook drama "The Social Network" as their weekend favorite.David Fincher's saga about personality clashes and legal feuds among the website's founders took in $15.5 million to remain the No. 1 film for a second straight weekend, according to studio estimates Sunday. Released by Sony, "The Social Network" raised its 10-day total to $46.1 million.Read More... More on Film