Unable to use Twitter in the classroom of norfolk schools, UK as it is blocked by the County's firewall. This is a great shame as it is a fantastic collaborative learning / communication tool.
Wiziq seemed quite a handy tool use and I will try to use it in the future. Although I was not impressed with the quality of the presentation by Nellie Deutsch. It had some interesting and useful content but was poorly organised and the sound quality was awful. Maybe this will improve over time.