Group items tagged

What Is An Annotation? Simply, an annotation is some extra data that can be associated with each tweet - data that followers might never see. Each annotation has three fields: a namespace, key and value - and each tweet can have several annotations. The namespace explains what the annotation describes. It could be a book, a meal, a place or pretty much anything. The key and value provide data within the context of the namespace - the author of the book, price of the meal, etc.

it's a system for almost any metadata to be connected to any Twitter message when it's published. Inside every Tweet is now a space where you could put or find anything, including links out to further instructions or larger bodies of information. That's always been the case with the 140 characters of content - but now we're talking about systematic metadata intended for machines, to augment the content.