We found a couple of independent sites that have reviewed Molkky in the USA.

First the folks over at yardgames.org wrote a nice review. While I agree the game does show wear pretty quickly I can tell you it does not hamper your ability to play the game.  Also, neither my children or I have ever gotten splinters.

Next, I found a quick review, but some other nice additional information over at tossinggames.com.  The even have a link to a pretty cool video.

Finally, we have a new on-line reseller in addition to qip.com.  Tailgate Games also seems to have a nice offering of other outdoor type games.