A tech giant’s ambitious new app will make it easier to share photos with friends and family, but may also cause privacy problems

By the end of the year, the video-sharing app Instagram will be ready to make video calls and share photos.In the meantime, the app is introducing a new feature called “video sharing,” in which users can post videos, photos, and audio directly to the service.Instagram has been trying to build a new business model for video, and “video” is the […]