Browsing photos in the Finder!
A great tip submitted by Csaba Illes: Browsing photos in the Finder! If you have a huge library of photos, iPhoto can get slow and not be as responsive. Sometimes, you also want to have certain pictures in folders without having to import them into iPhoto. It can be done, but the folder might not be as aesthetic as on Windows where you have all the thumbnails. This problem can easily be solved by modifying the view options of certain folders. In the pictures folder, press "Command-J" to open the view options, choose "This window only" (if you don' t want this all around the Finder) and check "Show icon preview". This unfortunately only works in the pictures folder that comes with your OS. You can also change the size of the icons to get bigger thumbnails. Thanks Csaba for the tip!