Do you Tweet?  Twitter is a great little social network, that lets you post status messages, sort of like Facebook.  And thats it.  Which sounds strange, but its really addictive!  You can Tweet from the Twitter website itself or use one of a number of desktop or iPhone apps.  I use and recommend Twitterific for both Mac and iPhone.  The free version is quite ok, its ad supported but the ads are minimal.  Tweet-r runs on both Mac and PC.  If you follow my Twitter feed, you will now also get updates from this blog, letting you know whenever there is a new post.  Just what you need when you dont have your RSS reader handy

Get onto it today, its great fun!