One of the great aspects of the blogosphere is the ability for people to leave comments on your blog and also comment on other people's blogs. It makes for a great continual conversation between people all over the internet (by the way I would like to say a big thank you to everybody who has left comments on this site and taken the time to get in contact ). Comments are another manifestation, along with, for example, blogs, social networks and wikis of how the internet is moving away from being a broadcast medium that people just 'surf' to being a place for to interact, communicate and share ideas. The problem has been that is difficult to keep track of these different conversations across dispersed web sites.