Explaining microblogging is slightly difficult, but I’ll give it a go: You sign up for a microblogging service like twitter. You ‘follow’ your friends that are already on there, and perhaps some people that aren’t your friends but people who say interesting things. Once you’ve started following your friends, you might download a program for your computer to alert you when they post (or in the case of twitter ’tweet’), and to allow you to post your own ’tweets’ without having to visit the twitter website at all.