We are not sure this is going to win any hearts and minds, but there is a guy who discovered that you can circumvent Adobe PDF documents (http://akira.arts.kuleuven.ac.be/andreas/blog/archives/2006/04/circumvent-pdf-drm-with-gmail.html) with printing and copy restrictions through Gmail's "View as HTML" (http://mail.google.com/support/bin/answer.py?answer=30719&hl=en) functionality. To make his point, he downloaded a DRM-protected PDF sample (http://www.adobe.com/products/pdfjobready/pdfs/pdftraag.pdf) from Adobe's site, e-mailed it to himself, and then used Gmail to cut & paste content from the original PDF.

From the site it says that the trick doesn't work anymore.

From the site it says that the trick doesn't work anymore.
There's some confusion as to what kind of DRM-protected Adobe files would work through Gmail. With Gmail you can copy and print content from PDF files that would normally not allow it. However, you cannot use Gmail for circumventing Adobe passwords.

Google's cache feature does the same if you happen to find the PDF in your online searches.