FlipToast (free)

Flipboard, may be a favorite social media app for iOS and Android, but there is not yet a Windows 8 app. So I'd advise using FlipToast for now. That's not to say, however, that it's only useful as a placeholder. This multifaceted social networking app lets you sign in to both Twitter and Facebook, as well as to LinkedIn and Instagram at the same time. From a single interface, you can read updates from all of these social services, and you can post updates to all but Instagram.