Aaron Moselle has the latest developments in the criminal cases in the Center City building collapse. Dave Davies looks at the changing role of social media in political campaigns. Sarah Whites-Kodischek reports on a study of how states have used their tobacco settlement money. Dave Heller talks with Steven Schorr, whose company is digitally scanning the Lincoln Memorial. NewsWorks theatre blogger Howard Shapiro reviews “Elf.” Shai Ben-Yaacov discusses snow day telecommuting with Eric Haberacker of The Vanguard Group. And our producers read snow day haiku submitted by listeners.