Hi,
has anyone tried using Aspose to prepare a pdf file for online collaboration?
You are supposed to set some properties in a document script, i.e. where the comments will be saved. You can define this manually in Acrobat Pro, but I understand you can also create a default script, but I suppose this requires that the files must be opened in Pro also.
I think you should be able to put this script in a dummy document and attach it to your pdf by using AsposePdf or similar, that should make it work even in Acrobat Reader, so that the comments will be saved online rather that in the file itself.
Also, Acrobat Pro has a function for creating a final PDF with all the comments joined back into the original file.