I am typing and creating a tex file using Latexila (which I think is compiling via pdftex) and am asking a few friends to help edit this doc. These friends, however, are not conversant with tex, and thus wish to simply use Adobe Reader to edit the doc. But, when they attempt to do so, they are unable to because they say that Reader will not let them do so because the doc is password protected or something to the like. How can I change this? I was not even aware I was putting any password on the doc, and have tried (in Natilus) changing said doc to read and write by anyone, but to no avail. BTW, I am using the current version of Latexila (2.6.2) on Ubuntu 13.04.
This seems to be a version issue. With Adobe Reader X (and presumably XI) commenting is enabled by default. However, the feature is disabled in Reader 9 unless enabled by Acrobat. I tried a few hacks, but was unable to determine exactly what Acrobat does to a pdf to enable commenting.
There is a discussion of alternative software for annotating pdfs on askubuntu, but if your friends are using Mac OS or Windows they just need to update Adobe Reader.
From Adobe reader FAQ
Can I edit a PDF file using Reader?
No. You cannot make permanent changes to PDF files using Reader. To edit PDF files, purchase Acrobat software.