Thank you for your question. I'm afraid that we don't offer the option to store Buzzword documents anywhere except on our secure servers. You could always download the content and save it elsewhere as a backup, if that helps.
Here is our security blurb:
Q. Is the service secure?
A. Acrobat.com employs some of the latest technology available for Internet security. When you access our services, Secure Socket Layer (SSL) technology protects your information using both server authentication and data encryption, helping to ensure that your data and documents are protected, and available only to you and users authorized by you. In addition, we provide application level features that let you control the accessibility of your content.