[... I had written about two thirds of this post on my iPhone using the WordPress app, while I was sitting at the bar in a Chilis restaurant. I saved the post as a draft, but when I tried to reload the post to finish, all the content was gone. All of it. This is the second or third time the WordPress app for the iPhone has failed me. I won't make that mistake again. I'm finding something else. Is there something else? Evernote?]

The killer iPhone apps just keep getting better and better. Yesterday I introduced you to the Ustream Broadcaster iPhone application. Today it’s KnockingLive. The KnockingLive’s approach is a little different. It uses the same technology to capture video, the iPhones camera view, but adds the ability to share video with a specific user or users. That’s right, you can stream private video to other iPhone users. And the other users even get a “knock knock” on their phone when you want to share something.

There is also an incredible sister app that allows you to share photos, or albums, and the receiving phone can choose to save the photos to their local phone. Wow. I’ll about this one next.

One thing this company has done is create a website that shows you how to use the features in several scenarios via videos. Very cool.