Commenting Feature of Acrobat Reader from pdflatex
The things you do when you are awake at 5 am for no reason…
Acrobat Reader has a really good commenting feature, which is neat for collaboration if you use LaTeX instead of Word (which is the mentally stable thing to do anyway). So, I tried to find out why I could not use this feature from a PDF created by LaTeX, or in this case, pdflatex.
Turns out it’s a security setting that has to be enabled, and apparently it’s not implemented in pdflatex because it would cost licensing fees.
So, the two options are
1) Use a different software with its annotating features, which is not so good for collaboration, and because the Acrobat Reader features are really good.
2) Create your pdf, track down someone who has the real (as in payed for) Acrobat software, make him open your document and save it with appropriate security settings.
Sorry, no easy solution 
May 23rd, 2011 @ 23:55
Check out pdftk.
You can enable security settings with this GPL tool.