Cemmento Addresses the Problem of Preserving Digital Annotations

Here at ProfHacker, we’re interested in digital tools for annotation. Over the years our authors have covered such tools as Google SideWiki, CommentPress and digress.it, Reframe It and Diigo, Scrible, and Hypothes.is. And as the comments to this post asking “How Do You Annotate in Your Class?” reveal, our readers are very interested in digital tools for annotation, too.

One sticking point with such tools, however, is that the annotations that are made on a published online may become useless if...