Facebook lawsuits add to IPO troubles

by AP Facebook's initial public offering is the subject of two congressional inquiries and mounting lawsuits as the social network enters its fifth day of public trading. The shares regained some ground Wednesday, rising $1, or 3.2 percent,By Chloe Albanesius Facebook has settled a class-action lawsuit regarding its "Sponsored Stories" advertising program, according to court documents. In a Monday

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