iPhone: While there are lots of mobile video-sharing apps for the iPhone, newcomer Klip makes it easy to scroll through videos pretty quickly and easily with its adaptive technology, as you can see in the video above.
Swipe the video and it will play at the speed you move your finger across the video. Shake your phone and all the videos on the page will start playing. You can also tag uploaded videos and your friends in the videos as well. Klip also has adaptive video streaming which checks your bandwith every four seconds and adjusts the playback accordingly, just in case you've got a flaky connection. The free app is available in the App Store now.