Unless you have explicitly chosen to authorize Twitter for Facebook to connect your Twitter account to your Facebook account, we will not cross-post to Facebook on your behalf, or display on Facebook your Twitter username, profile picture, or other profile information.
When you choose to connect your Twitter account to your Facebook account, the Facebook authentication dialog screen specifies the Facebook account information that you authorize sharing with Twitter, including your public profile and birthday.
The streaming APIs, for example, use a persistent HTTP connection and parse, filter and aggregate before storing the results to a data store.
Developers can then get their apps to auto-refresh or just notify the user that tweet events have occurred, as is the case with many Android apps.
Twitter's Facebook connection option makes it easy for your business to keep customers and colleagues on Facebook informed about company news.
If you no longer want your tweets to post to Facebook, you can disconnect the sites completely or temporarily stop tweets from posting to your personal profile or business page.
It allows you to designate the tweets you want to appear on Facebook by end a tweet with the #fb “hashtag” in your post.
Only those tweets with the hash tag at the end will be posted on Facebook.
It's currently unavailable to new users because it has reached Twitter's 100,000-user-token limit.
However, existing token owners can still download and auto-refresh feeds on Android devices with it.
Please note that it may take up to a few weeks for this information to be fully removed from our systems.
Make sure the box to Post your Tweets to Facebook is checked in your Twitter Apps settings.
If you have connected your Twitter and Facebook accounts but your Facebook friends can't see your Tweets on your wall, you may need to update your privacy settings for Twitter for Facebook.