I am revising a paper now and one of the reviewers sent their comments as a PDF what looked like a Word document or RTF containing the LaTeX, rather than a rendered version. So it was a little annoying to read, what with all of the $’s and so on. The beauty of it was that I could just cut and paste from the PDF into my document of responses to the reviewers without having to reformat and it (almost) rendered without a hitch. There were some lingering issues though with quotation marks (I hate smart quotes) and itemizing/enumerating lists.
As a recommendation, I think that the raw .tex file of the review should be uploaded instead. That will make it much easier for the authors to revise, no? I plan on doing this in the future. What do you do?