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Some good ones here: Link

Other than that I just google search, my current background is the northern lights over finland:)
 
www.deviantart.com is good... though you know wallpapers are universal no need for "macbook" wallpapers ;).. Google images also works (do an advanced search for resolutions 1280x800)

Haha, yes, obviously.

Figured the MacBook forum would be most suitable for the question as I run a MacBook.

Thanks for the links guys!
 
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