"Lurkers – This is the majority of students within xMOOCs, where people enroll but just observe or sample a few items at the most. Many of these students do not even get beyond registering for the MOOC or maybe watching part of a video.Passive Participants – These are students who most closely align with traditional education students, viewing a course as content to consume. These students typically watch videos, perhaps take quizzes, but tend to not participate in activities or class discussions.Active Participants – These are the students who fully intend to participate in the MOOC, including consuming content, taking quizzes and exams, taking part in activities such as writing assignments and peer grading, and actively participate in discussions via discussion forums, blogs, twitter, Google+, or other forms of social media.Drop-Ins – These are students who become partially or fully active participants for a select topic within the course, but do not attempt to complete the entire course.
These are not static patterns, in that students may move from one archetype to another. Lurkers may decide that they should spend more time in the course and become passive participants. Passive participants may become more engaged and become active participants over time. Of course, any of these students may also drop out and leave the course..."
Via Jenny Pesina