Tim Gideon at PC Magazine published an extensive review of the iPad yesterday. His take on the virtual keyboard? The fact that he wrote the entire review on the iPad itself is a good sign:

As someone who's all thumbs when it comes to iPhone's tiny on-screen keyboard, I wondered if the iPad's larger keyboard would help me master this touch screen typing thing. In a word: Yes. I'm writing this review on the iPad's horizontal keyboard, in which the keys are large and nicely spaced. (The vertical keyboard is a little tighter, but still definitely useable.) If it weren't comfortable, I would have abandoned the iPad for my laptop 1,000 words ago.

One tidbit that we found interesting:

Apple anticipates more than 1,000 iPad apps in addition to the over 150,000 currently available for the iPhone and iPod touch

The conclusion?

These [camera, flash, multitasking] are all valid complaints, but one thing I can say about most Apple products, and certainly the iPad: There may be things it doesn't do, but what it does do, it does remarkably well. Aside from the aforementioned limitations, there isn't a lot else to gripe about. And to my great surprise, you can actually get real work done with the iPad.

Full review here.