This service is great! I think that the ability to use it on the go would make it even better and more useful

So that when adding Notes etc each collaborative user can be esily identified

Or ask for a name/identifier for a session and precede all comments with that name

When somebody shares a document with me, I'd like to add it to my documents (or bookmark it) so as to be able to keep track of it without having to keep the shared document's URL somewhere.

Title is self-explanatory. In order to use crocodoc effectively to get a wide array of collaborators reviewing my 750+ page book, I need to be able to prevent them from downloading it.

Why wasn't this in from the beginning when you're interfacing with GoogleDocs?

I'd love to be able draw this stuff using a tool, as my freehand sucks!

let me annotate the document in fullscreen

It would be great to use your service from any Android phone.

I would like to be able to work on my crocodoc documents in my browser when I am not online, then have my changes sync next time I am online -- like is possible for gmail.

I've exported a document with annotations to PDF. When I opened it in Mac Preview I could click the annotation however, the text is missing.

.xls, .numbers etc.

Let me find out the UUID of a document I uploaded manually so I can use session-based viewing with that document without uploading it via api

Community interaction is wonderful! Especially if you have the option to toggle between seeing everyone's notes or just your own notes. Especially if there are several reviewers. Personally, I'd like to make a workbook available to my students, give a single URL, and each student could choose to see just their own markups on the Workbook, or that of the entire group (e.g., 12 students). To see an example of this, check out Bookglutton.com.

It would be nice to have that info in the downloaded file also.

Adding the ability to make UML 2.3 Class Diagrams, Flow Charts, Sequence Diagrams. Etc! All in collaboration mode! Would be a killer!