Macworld review
http://www.macworld.com/reviews/product/586738/review/magic_trackpad.html?expand=true&lsrc=rss_main
[quote]
Pros
Large, Multi-Touch surface
Works identically to Apple’s laptop trackpads
Rugged, portable design matches Apple’s keyboards
Easy setup
Cons
Not as precise as a mouse or trackball
Not ideal for large screens or multiple displays[/quote]