Not so good for running IM type apps where you want them to background. Not so great for a lot of typing, since the keyboard is a step back from the iPhone, with keys moving around inconsistently, and various weird foibles (shift key coloring? WTH?).
The iPad was rushed out with 3.2 as a stopgap, and it shows. It's a great device, but it needs iOS 4 and a camera badly.