
Appjuice.com brings you a great new app:
"Watermarker" , an app that allows you to brand or watermark your video's whether you use an image / logo or a spiffy line of text: Watermarker will do it fast and good. You have precise control over where and how large your logo/text will appear. 
If you've bought Watermarker and have some questions regarding as to how to use it, please take a look at our tutorial video here. I've decided for this app to leave the tutorials out of the app, to save on download size and create the meanest & leanest experience possible.
Only one written review so far:
Even though there is no facility to discuss with the customers, I would like to respond to this remark about low quality. There is basically no way you can get a hires watermark on top of a lowres video. Text will look more or less pixelated on 640x480, 480x360 or lower SD footage. Unless of course, you blow up the orignial video and rerender it on a higher resolution and superimpose a high-res watermark. Our app does not do that, it maintains the original resolution.
Starting screen, pick a video or go to settings
Settings for a fullscreen watermark, in this case vignetting
Finished setting up a logo as a watermark
Watermarker showing a preview of first frame and processing a video
Setting up a text picking one of the many available faces (over 160 provided by iOS 5)
Example of setting up a centered text