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Adobe says it worked with Microsoft on Acrobat integration, and it's possible the company went a little overboard: having PDF appear so many times in the Backstage menu is a little overwhelming and could be confusing — especially as you still have the built-in PDF creation tools.
The Acrobat X ribbon tab in Office 2010 has far fewer options, and they're the ones you need. You can turn your document into a straightforward PDF (with the option to transfer footnotes, endnotes and comments), or make a PDF that's designed to share. The option to send out a document for comment that people can't edit — so you don't have to manage multiple incompatible revisions — could be very useful.
If you work with SharePoint, extra SharePoint tools appear on the Acrobat X menu. You can check documents back in and save them seamlessly to the SharePoint site, or close them and cancel the checkout cleanly. If you need to fill in metadata you can do that from Acrobat — and administrators can force this as part of the check-in process inside Acrobat (users may not like this, but the business gets the information it needs or you can't save the PDF).