What's a PDA again?

Hi you lucky iPhone owners!
Looking back in time I found this article about smartphones: tiny.cc/w41xm (the link is working now). It was written in September 2006, just a few months before the iPhone was introduced and changed the mobile phone industry. It did so in a big way.
I think it's a good article! However it feels really, really old. It mentions PDA's, a device that is about to be forgotten, and it does so in the first sentence: "Smart phones offer the functions of a mobile phone and a PDA in one device, but they are not for everyone. Here's what you need to know before buying one." Not for everyone? Yes, this was a true statement at the time, but not now.
The article definitely sees smartphones as a tool for professionals that are often away from their office. But it also says: "With increasingly more onboard multimedia features and cheaper flash memory cards, smart phones have become great companions for mobile entertainment, from picture and music playback to games and video.". Pictures are mentioned but not cameras.
Again, it's a good article, but a lot has happened in the five years since it was written. A lot of what has happened is thanks to Apple, the mobile phone industry outsider. I suspect there may be many more industries that need an outsider's help to start developing properly. Let there be more apples!!!