social documents - talkeuro as new a social software form

I have been casting around for a name for what we are trying to do with talkeuro and settled on "Social Documents". This represents what we are trying to do, take static documents, often released as PDFs, and put people having a conversation back into them. Though we are using a weblog platform to build talkeuro, it is not a weblog, nor is it a normal website with only limited interaction. A definition will help…

"A Social Document encourages direct engagement with the content of the document. It provides the means of discussion itself, enabling people's commentary and placing it alongside the document on a section by section basis. Those reading the document can therefore read the content and the opinions of those reading before them."