Posterous App for iOS
"Posterous Spaces is the easiest way to share photos, video and ideas safely with family, friends and groups.
★ Easily control who you share with, every time.
★ Post anything – combine photos, video and text in seconds.
★ Follow friends and favorites, keeping up on their posts while commenting, liking and more on-the-go.
★ Create as many Spaces as you want (make them private or public.)
★ Automatically broadcast your public posts to Facebook, Twitter, Flickr and YouTube.
★ Create a Space for your group in minutes, letting everyone involved contribute."