People are making the keyboard into a bigger issue than it really is. In fact there are no issues as far as I'm concerned. The key size is the exact same size as the key tops of a normal keyboard. What is missing is the angled section of the key that flares out from the top of the key. Apple did this so that the key actually sits flush with the the palmrest when fully depressed. This allowed the keyboard to have a lower profile yet maintain a normal notebook key travel. Since there isn't the flared section the keys look like they are spaced quite wide but in fact they are spaced the same as a normal full sized notebook keyboard. I've read some reports that peoples fingers were missing the keys due to the size and spacing. What a load of crap. Go take a look at a desktop keyboard. Notice how tall the keys are and how much of a skirt (the flared section) the keys have. Take a look at the large space in between the keys tops. So these people who say they have problems typing on the MB must also have problems typing on a regular keyboard. Maybe it's not the keyboard but their keyboarding skills that are the problem?
So to sum it up:
1. The keys tops are the same size as a normal notebook keyboard.
2. The key spacing is the same as a normal notebook keyboard.
3. The keyboard feels better than the majority of notebook keyboards available.
4. People who don't have a clue what the hell they are taking about are offering opinions about a keyboard the have never typed on.
5. People are stupid.