Scribd, a site for sharing documents, is coming out of private beta this week: Scribd is most easily described as a text version of YouTube. It is a social network that lets you tag, share, and comment on uploaded documents (.doc, .pdf, .txt, .ppt, .xls, .ps, .lit). Documents can be displayed and embedded as HTML or the under-utilized, and faster-than-a-PDF, Flash paper format. They can […]