I'm the author of a usage tracking utility on Android called NodeDroid. Originally it only supported Internode, but I am now expanding it to support other ISPs and telcos. The first one I want to try out is Optus. I've just uploaded the new version of the application, and I'm hoping some of you guys would like to try it out.The application works by screen-scraping the optus web site, and presenting it in a better format, along with usage graphs and the normal sort of thing you would expect from a usage meter.