A great blog having a great number of resources and tools which you can make use of for your classes. You can use RSS to subscribe to the posts, so that you can keep up to date with very little effort.
There are a number of other tools that you can use to keep track of the many websites which publish information that can interest you. Google offer the iGoogle reader. iGoogle is an RSS aggregator… you simply copy and paste the URL of your favourite sites, and iGoogle will keep you updated with the latest posts.
I do prefer to use Feedly. Feedly is another service which uses my gmail account. Everytime I come across an interesting blog which I want to keep visiting and which is of enough interest to me that makes me want to keep up to date with the info published I add it to Feedly. Feedly is available both on PC and Mac, as well as on all mobile platforms. A great tool to keep you up to date.
The third RSS aggregator, which is also nice to use is called Netvibes. I used to use it and the good thing about it is that whilst the other two RSS readers are personalised, and therefore available only to yourself, Netvibes allows you to create a public page with all the feeds from the websites which are of interest to you and may be of interest to your audience.