My personal learning environment

When learning about personal learning environments (PLNs) this week I started to reflect on my own. When seeing the visuals posted from others I realized my learning environment is much less social networking focused than others. Many of the examples I saw included Twitter, Facebook, and a whole host of things I'd never heard of as ways for learning and finding new information. I think (based on my understanding of the concept) that my PLN consists of a lot of journal articles (pulled mostly from GoogleScholar), collaborating through Dropbox (maybe that is my social networking piece), and meeting face-to-face with colleagues to learn new stats methods or work through problems. Perhaps I'm wrong, it may be that my academic learning is less social-network based but other learning does lend itself better to such sites. As I look for places to live in Australia, for example, I am highly dependent on people's reviews and suggestions. Speaking of, anyone been to Australia and have recommendations for things to do/see?