Features:
• Enhance interaction with PDF Portfolios
PDF Portfolios provide easier navigation when you work with multiple PDF documents and other document types. Portfolios also enable you to work with a collection of materials such as drawings, e-mail messages, spreadsheets, and videos as a single file, which makes distribution, storage, retrieval, and collaboration easy for end users.

Work with Acrobat.com (beta)
From Reader 9, you can go directly into Acrobat.com (beta), an exciting new set of online services from Adobe, to perform common tasks, such as:
Create up to five Adobe PDF files
Share and store documents on the web
Create and collaborate on a document in Adobe Buzzword®