Teaching, learning and social media in the internet age

I haven't been very active posting to this blog, mainly because my teaching at KAIST, along with research and consulting activities, have kept me busy.   However, I'm motivated to do this short post today because there is a common thread to all of my activities.  It is the complete intrusion of the cloud, mobile broadband and social media into the process of teaching and learning.
For example, nearly all of the library research, reading and background preparation I do for my undergraduate "Introduction to Mass Communication" class at KAIST is online.  Google books and Google scholar serve as my "card catalogue," but I also find the extensive online services through KAIST's library to be very helpful.
Also, given the wealth of lectures, full courses and video, text or images that are available on the Web, I find the process of preparing for each class session decisively different than it was just a couple of decades ago.  These days, one must prepare with the constant knowledge that students may look elsewhere for the information.  This realization is ample incentive to introduce discussion, debate and student participation into classes.
I'm also working on another project that involves thinking about the new role and potential, as well as some of the pitfalls, of social media in the process of national development.  
Finally, I am half way through Google's online course "Power Searching with Google," and would heartily recommend it to any of you who depend upon this search engine.  I managed to get 100% on the mid-class assessment after three tries.   (I think I could have done it in one try, but was rushing through the material).   The class is extremely well presented.