Being mindful of the various possible types of disabilities and ways to effectivley get all the information equally presented for all needs.  

The instructor should try to identify with there students personality s and set courses that can touch on the different personalitys, not all personalitys can but fully achived but the more...

Communication and active learning are key elements to the success of the student in an online class.  

Students should know what is expected of them and those expectations should be clearly projected to them throught the LMS.  

Online citizenship is crucial to having a great online class and class environment.  

A Blog can be used as a great educational tool for students. They can express thier thoughts easier and might be more apt to ask questions or raise concerns they might not have in person.

I never considered Twitter a "Microblog". Interesting take on that. I wonder how students feel about Twitter in regards to using it for educational purposes.

Flexible Rubric and an Open Mind

Be sure that you are using Social Media with your students in a productive way, Don't do it to look cool.