Scribd is going to be YouTube for documents. Documents are stored and presented in flash format. The documents can also be embedded on your webpage/blog as I have done below –
You can also download them in different formats including PDF, Word, Text or MP3 – one feature which YouTube is missing :). You can also view document stats in real-time which include Map, Page views, Unique users etc. And ther is also Digg like feature to Like a document.