There are many, MANY little free applications that give you the "Aero Snap" functionality in OSX, AND you get the added benefits of Spaces and Expose that I couldn't fathom having to live without on a daily basis. Hah and this is coming from someone who makes his living and supports his family on Windows (I'm a Windows systems engineer by trade). I hated Mac's with a passion until my job got me one in 2008 and made me use one, then I just fell in love and ESPECIALLY in love with the multitasking a la' spaces and expose. Now every time I go in to work, hop on my Windows computer, and have 20+ windows open (yup I'm a neurotic multitasker) I just shake my head and HATE how inefficient Aero Peek is for basically doing anything that can be loosely defined as multitasking...