The new iPaper interface for documents hosted on Scribd is pretty awesome. Their FAQ describes what's different about iPaper:

Unlike traditional document formats, iPaper is viewed inside a Web browser and doesn't require additional software to view it. At 100 KB the iPaper application is about 1/1000th the size of Adobe’s Acrobat Reader software, making it an incredibly fast way to view documents. Despite the tiny size, iPaper integrates Scribd’s social features, like emailing and embedding. iPaper' security system allows content owners to protect their work without clumsy DRM solutions. iPaper also builds on the rich features of PDF, including full text search, copy/paste functionality, view modes, and zoom.

I moved all of the presentations found in my Publications section over to Scribd. There's an example below. Click the square icon in the upper right corner to expand iPaper to full browser size. From there you'll get access to all of the following features in the top control bar:

• link to the original document on Scribd
• email a link to the document
• copy the embed code or permalink
• view document info
• print
• view document in list, book or slide mode
• zoom
• previous/next navigation
• switch from thumbnail view to full page view
• search the text in the document
• select text

Scribd also allows document owners to share the revenue from Adsense clicks that it places between slides/pages of your document. This works better when the slides are embedded at large sizes or when viewed in full screen, where the Adsense text is legible.

Scribd's Flash player is really turning out to be a versatile application, with the ability to serve up most document formats and with an excellent set of user controllable features in the embedded player. Slideshare has some catching up to do.