Do you see what I see? You can now, with Knocking Live Video, a new iPhone app from Pointy Heads Software that enables users to "knock" on their friends' phones and share their live videos instantly. The mobile-to-mobile live video broadcasting promises to come in handy for getting friends' opinions on in-store purchasing decisions, or for making them part of those time of your life moments.

The first 50,000 users can get the app on iTunes for free. Thereafter, it will cost $2.99.