My thoughts on Econsultancy:
Furthermore, because Twitter Cards can be based on existing metadata of websites, they can be simply generated at scale. For example, Amazon can immediately translate any product listing into an accompanying Card.
At that stage, what’s to stop you making a page of the cards, searching by its metadata and cutting out the middle man? Or creating a simple shopfront by creating a search filter of friends’ “Buy” cards?
Read the rest: Twitter Cards are becoming the smallest unit of ‘web’