In a move that some would view as "a long time coming", Twitter recently confirmed integration with Facebook, such as the way usernames, hashtags, photos and more are cross-posted. Rich media features related to the first photo, URL, @mention or #hashtag in cross-posted tweets are now included.
As you may already know, we are very supportive of Twitter hashtags as social media resources for discussion and organization, so this just helps the cause even more!
