Don't worry, Tom. There's an equally vocal group of teachers showing how important these tools are and how good they are for learning. Learning and Teaching Scotland, for whom I work, have a new technologies for learning team. One specialises in gaming for learning, another in online support for teachers and I work with social media and gaming. In East Lothian, a small authority to the East of Edinburgh, for example, I've helped get over a third of teachers sharing their ideas, thoughts and practice over blogs. Just take a look at the head of education's blog:
http://edubuzz.org/blogs/donsblog/
My own blog carries near daily posts about some amazing education social media practice around the world, particularly in the UK. England and Wales are much slower to cotton onto this than Scottish schools in pure numbers terms of uptake, but it is worrying that a Scottish teacher seems to have so little information about the positive impact. Something there for us to do.
Most of us in Scottish education making the decisions are more than aware that the bullying did not start on YouTube. YouTube has given us a great opportunity, though, to start SEEING what we have probably been too quick to turn our eyes away from.