Teachmeet[Aus} the official site for Teachmeets in Australia #TMAus
TeachMeets are meeting/un-conferences where teachers share good practice, practical ideas and personal insights into teaching with technology.
All participants are encouraged to be ready to volunteer an idea, a tool or a website that they have delivered in their classroom.
Individual hashtags for different cities ... e.g.
Sydney #tmsydney http://tmsydney.wikispaces.com/
check out http://www.teachmeet.net/ for others