Twitter

Dean Groom "Twitter is a peer assisted learning platform"

What is Twitter? Twitter in Plain English

Jane Hart: Twitter Workshop

Getting started in Twitter and using it for teaching and learning

Mashable: Twitter lists, resources and how-tos

How to know who to follow on Twitter

How to connect with people and get the conversation going

How to use Twitter for teaching and learning

Tomaz Lasic: Twitter handbook for teachers

Carol Cooper-Taylor: 50 ideas on using Twitter for education