Apple has yet to offer a viable system-wide copy/paste solution on the iPhone, but Proximi has decided to get as close as they can. Their app, MacicPad, was just made available in the Apple Store. It's a rich text editor for the iPhone and iPod touch that has the addition of one highly requested feature: copy and paste. It doesn't work system-wide, so you can only copy and paste notes from one point in the device to another, but it's a start.
