Lacuna, a digital reading, writing, and annotation platform I developed, is now in use as part of a MOOC being run at Dartmouth University. An author for their EdTech blog recently wrote up the experience. Here's my favorite part of the post:

The AmRenX team is using YellowDig and Lacuna Stories to encourage engagement in Dartmouth’s first literature MOOC. YellowDig has been a different platform for some seasoned edX learners, but they have really taken to Lacuna. To date 542 learners have made 6,930 annotations in AmRenX. There is more activity in the annotation platform than any other part of the course.

For more, including animated GIFs of the platform in action, read the full post.