Not actually useful as a screensaver.

I bought this with the sole intent of using it as a screensaver as I do a regular system screensaver.

It was only after I made the purchase and struggled for ten minutes that I found the small print that said it cannot be used as a system screensaver to lock the Mac. So effectively, this is useless to me.

Its otherwise nicely polished and it does what it says it does nicely. Id prefer if it was more clear up front that this is not fully compatible with the OS X screen saver infrastructure, and sold on its other merits.

Quazitron about Living Earth - Weather & Clock, v1.0