This document discusses using annotation systems and hyperlinking to document student connectivity in online courses. It summarizes a study analyzing student blog posts and tweets from 4 courses with 300+ participants. The study found students used hyperlinks to connect ideas across courses, provide context and examples, and cite references. Students linked to news, journals, websites, videos, and each other's work. Posts demonstrating high connectivity varied hyperlink types. Images and videos promoted connectivity when students created them and added context. The document concludes annotation systems like hyperlinking can support student connectivity, but instructors should discuss expectations and provide feedback to help students use hyperlinking skills.