"Here's an example: https://twitter.com/#!/stephda... On the other hand, it seems Twitter has chosen to only provide previews for posts containing images (we'd have wished for excerpts-only as well). Unfortunately, we have no control on their implementation choices. But they could if they wanted to. :) If it's from us, you can safely assume it's opened. It's an important part of Automattic's creed: http://ma.tt/2011/09/automatti... "I am more motivated by impact than money, and I know that Open Source is one of the most powerful ideas of our generation." This is who we are, and we're not budging. ;)" - Stephane Daury