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## Social Media  Social media has already begun to take on the role of providing commentary on papers. While these formats are not directly linked to papers, it is worth noting that people are using platforms like Twitter to discuss papers, e.g. [this disucssion on a recent astro-ph paper](https://storify.com/jegpeek/a-quick-inquiry-with-an-expert-on-totally-metal-st/preview)  ##Annotation: Commenting and Markup  discuss commenting tools, semantic markup  Examples: http://www.w3.org/annotation/, http://hypothes.is, http://www.annotationframework.org, http://iannotate.org, http://genius.com  Ideas from CE: 2 sentences!   Notes only: Hypothes.is video is nice https://hypothes.is/what-is-it/ and they reference the Annotator OKF project, https://edu.critiqueit.com/ as a way to add interactive comments and possible the Domeo project (new name?) and the ability to make claims, like the librarians do when identifying that papers use data from facilities (see http://arxiv.org/pdf/1206.6352.pdf). Martin Fenner has a nice article on fragment identifiers and DOIs http://blog.martinfenner.org/2014/08/02/fragment-identifiers-and-dois/. Yes, must utilize http://www.w3.org/ns/oa.  options, Open Annotations, etc.