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The Annotations feature will give developers much more flexibility around the context of a tweet. The feature will allow developers to “add any arbitrary metadata to any tweet in the system.” So, just like a tweet can today be transmitted along with information about which other tweet it was in reply to, or what location it came from, or what application it was created on, now Twitter will allow developers to make up new stuff. Twitter is looking to see how developers use Annotations before it creates any sort of taxonomy for them.
Now the company has decided to do just that. Twitter publishing tools can now add a description to any tweet their users publish, not as a part of the 140 character message, but as a small machine-readable metadata field that travels along with the content.
You can find all the information about Twitter Annotations at groups.google.com/group/twitter-api-announce/browse_thread/thread/fa5da2608865453?pli=1
What do you think about this upcoming feature? What would be the potential of semantically tagging tweets using Common Tags, for example, instead of hastags? Leave your comments below to start the discussion 
Tags: annotation, initiative, twitter
