PDAs are still around. It’s just that a lot of people prefer the PDA /Smartphone combination finding it more convenient than having a dedicated PDA device. There’s the iPAQ for example. I used to work in a hotel and then at a cell phone company – so I’ve seen a lot of them from business travelers who don’t like roaming charges and don’t want to switch out devices for a local rate or prefer them for some other reason. And at the cell company I saw more people talking about PDA/SP combos because there’s the Blackberry / iPhone which both have a lot of the same features as a PDA but obviously won’t be running Windows Mobile and a lot of phones didn’t have word processing capabilities until recently. I’d say 3 years ago I saw a real dip in my bubble of experience. But seeing people carrying them around everywhere in the rest of the world? 5 years or so.
Anyway, it’s 3AM, that’s all I got off the top of my head.