I write on Open Source and did a book thing
I also did a thing with the TV people.
PHP – the Sydney PHP Group (Commercialising Your Opensource Application, Simple Scalability, How to Hack) (sydphp.org)
Data – Advocate to Universities, Apps for NSW, Government Engagement
Enterprise Search – Open Hack, Google Enterprise Search Community
I’ve volunteered quite a bit at Young Rewired State
Education – Coding for Kids (codingforkids.org), Rewired State, Young Rewired State