Whenever Apple take the opportunity to add new frameworks and features into iOS, it always opens the door for jailbreak developers to build new and interesting tweaks that take advantage of the new additions. The release of iOS 6 saw Apple extend their initial Twitter integration to support Facebook and Sina Weibo as part of the new Social framework within the iOS SDK, a move that has resulted in the creation of the QuickShare for ActionMenu package available now on the Cydia store.
