Scripts like some you find on this blog like here and they are great for adding a bit of a difference to your blogs and sites etc.
They dont have to be hard to add either, just a case of adding the code to the template more often than not…there are plenty of great free scripts out there to utilise if you have a look.
There will be a rise of scripts and widgets to add to our blogs over time, in a way to to make our blogs more interactive.
Blogs are at the forefront of the social web which means blogs will be one of the first places you will see things like this over time.
Eventually I can see people being able to find blogs via blog widgets.