After a month of using Apple’s new Magic Mouse, a couple more observations:

1. The mouse’s touch surface can be crazy sensitive in some applications. Page scrolling seems to be fine, but when scrolling is used for zooming in, for example, games and online maps, a light nudge — even an inadvertent graze of the edge of the mouse — can be enough to zoom in or out halfway, as I found in Civilization IV and Google Maps. It’s actually quite hard to keep things under control.
2. One unforeseen usability problem with the mouse’s symmetrical design: it’s possible to grab the mouse backwards if you’re not looking. Hilarity ensues when you try to use it that way and your mouse movements are flipped 180 degrees, and you wonder what the hell is going on until you see that faint gray Apple logo upside-down …

Previously: First impressions: Apple’s Magic Mouse.