People do regularly mirror repositories to github, and there'd be serious problems if github prevented that or somehow tried to force you to have your github repository as the "canonical" home of your project.
That’s not really what Facebook is for, it’s not supposed to be ANOTHER place to find your tweets.
I’m trying to come up with a better analogy but I’m not doing very good.
Auto posting tweets so that people can use Twitter and still appear to be on Facebook doesn’t help that mission.
Facebook was not losing by this. If someone had connected their Twitter account, it meant they cared enough so they would be visiting Facebook, even if it was sporadically to check how their posts were doing and to see the necessary ads.
http://v3.designforfun.com/images/portfolio/client/2009/face...