With AirDrop in Mac OS X Lion, you can send files to anyone around you — wirelessly. AirDrop doesn’t require setup or special settings. Just click the AirDrop icon in the Finder sidebar, and your Mac automatically discovers other people nearby who are using AirDrop. You’ll even see contact photos for those who are already in your Address Book. To share a file, simply drag it to someone’s name. Once accepted, the file transfers directly to the person’s Downloads folder. When you’re done with AirDrop, close the Finder and your Mac is no longer visible to others.