Instructor presence, though it can be defined more technically, is a perception that the instructor is there and available to the student during a class. Lately, in addition to my weekly summaries and guidance in the discussion forums, plus announcements and messages with individual students, I’ve also been using two other elements: an introductory video at the beginning of class, and a Voki introduction to each week.
Here’s the introductory video for this coming summer:
Here’s video on how I create my weekly Voki:
While both are clearly presentations rather than interactivity, I think the spontaneity is important in encouraging students to see me as a real person at the “other end” of the class. That’s why I prefer cheap and easy methods like these (webcam and iMovie for the video, free Voki for the animation) rather than more “professional” means.