In regards to the DRM-protected PDFs, I’d suggest someone just wget all the PDF files and write a quick script that passes them through some of the tools that come with Ghostscript. I wrote about doing that a while back. A brief overview:
jmoore@neo:~> pdf2ps locked-file.pdf temp.ps
jmoore@neo:~> ps2pdf temp.ps unlocked-file.pdf
That’s pretty easy, eh?