I use Google reader to track changes in web sites for which I have an interest. Google reader uses RSS - it provides a list of the sites that have new items, so that you dont have to continually check them for new material. If you have a large number of "favourite" web pages, it can save a huge amount of time. You just log into Google reader, and click on the new articles.
It always irked me that the Air-Stream/tracker page didnt have an RSS feed - so I had to check it manually!
However, Google reader now has a new feature, that it can self generate a RSS feed, so you can add pages that dont have RSS feeds associated with them to your subscriptions. It seems to work well, so if you do like RSS it might be worth a look. You can just add the AS/tracker URL like any other RSS subscription, then click on "create a feed" when prompted. Easy!

RSS is available
Nice one Steve,
I noticed your post as I was clicking around the site and wondered to myself where the RSS button had gone. It seems as though a theme update somewhere in the past has robbed the site of it's RSS button! So until that can be sorted out, I thought I would post the appropriate URLs here for people who want to use RSS readers.
To track the main webpage articles:
http://www.air-stream.org.au/node/feed
To track user blogs:
http://www.air-stream.org.au/blog/feed
Or if you would like to track a specific user's blog:
http://www.air-stream.org.au/blog/username/feed
Hope that can help more of you stay up to date and involved!
T