Here's another useful video from the Common Craft Show explaining another internet concept. This time it's 'social bookmarking'. Forget the 'social' for a while and think of bookmarking. Most of us bookmark our favorite sites using the browser menu, but this then keeps the bookmarks on just our local computer. If we were to go and work on some other computer, we would lose all that information. This is about saving your bookmarks on the internet so you can access them on any computer connected to the net. Very very useful to those who mostly frequent the internet using Cyber Cafes. The social part comes at a later stage, when you share your bookmarks with other people and access other people's bookmarks to gather more information.
I use del.icio.us, which is what this video is about, and my place of work has also launched into this sphere by having an account.
Note that it is also possible to download add-on features to integrate this bookmarking service into your browser. Links to these are available below