This guide from Joyce Valenza is a mine of practical information for using YoiuTube better. I love YouTube but can remember more horror stories of its failure to work than I care to admit! (Lining up 5 clips in advance in a huge lectuire theatre at a conference and then having no sound...for instance!)
I need to read this in detail and use the tips. Suggest you do too!

This post from Jeff Dunn from Edudemic suggests 100 ways to use Twitter in education by degree of difficulty.
He says
"Twitter is a powerhouse for marketing, communication, business, and even education, letting people from around the world work together, share ideas, and gain exposure.
It has become a staple at many online colleges and campuses as well, leaving many academics wondering just how and if they should be using Twitter both in the classroom and in their professional lives. So we’ve revised our our original 2009 list to get you started or up to date.
Whether you’re an academic or just interested in building your Twitter profile, keep reading to learn some tips and tricks that can help you take...

This looks an important book for those who want to get evidence of how social media is being used in higher education. Here is the contents page :

Section 1 Introduction

Chapter 1: Understanding Social Media
Nicole A. Buzzetto-More ......................................... 1

Chapter 2: Theoretical Perspectives of Social Media
Catheryn Cheal .........................................................19

Chapter 3: Taxonomy of Web 2.0 Applications with Educational Potential
Tihomir Orehovacki, Goran Bubaš, and Andreja Kovacic ........................................................43

Section 2 Multi-Media

Chapter 4: Flickr: Critique and Collaborative Feedback in a Design Course
Diane Robbie and Lynette Zheng .............................. 73

Chapter 5: YouTube: Beyond Lectures and Papers in Leadership...

In 2008 Anne C. Osterman published an article online for librarians about the potential of student response systems (SRS) or clickers in the library instruction setting.  College & Undergraduate Libraries published it with the title "Student Response Systems: Keeping the Students Engaged."  (It appears the the print version came out first in 2007.)  She introduces the topic by mentioning many factors that go against participation in the library instruction classroom: unfamiliar setting, short opportunity (one shot at teaching library skills), and content many would not consider exciting. 

Librarians do what they can to invite participation.  They will work to make the instruction tied directly to an assignment, develop hands-on exercises, create handouts, and sometimes divide classes into groups to work together (50).  Osterman writes: "These tools do little, however, to help with one more inherent difficulty of library...