Actually I can't stand to read documents on Scribd. I would much rather just gave the PDF to view instead on an in-browser type of thing. In fact I am looking into removing it from all my searches because it's gotten to the point of me just closing the tab when u realize it's a Scribd page. :/
Because integrating the document into a page is annoying - in order to fit other content such as ads, the main viewing window is restricted to an unreasonable size. I'd much rather have it open up a document in the full screen.
Plus there's a certain senselessness to distributing documents this way when everyone is already happy using a pefectly capable, open file format that every machine can read as it is, not to mention tying the existence of said documents down to the survival of a single company.