The Imageshack application allows you to upload new or existing images and video directly from your iPhone to your Imageshack, Twitter, or Youtube account. You can also browse your images and videos on the go.
Features: Unlimited uploads Upload via WIFI and 3G Tweet images and video to twitter via yfrog High quality video encoding up to 15 minutes Included GPS location with uploads View friend's uploads Queue multiple uploads Start in camera mode
You can download Imageshack Uploader from the App Store for free.