Attached Link: http://www.macupdate.com/info.php/id/18885

Under Macintosh OSX .DS_Store holds the information which controls the way a folder will be opened; i.e., the shape and size of the window, the position of the window on the desktop and whether file, folder or icon view has been selected. If you were to delete the .DS_Store the folder would revert to the system default next time it is opened and a new blank .DS_Store would appear (invisibly). We have to put up with a constant stream of PC, junk files in our e-mail .DS_Store is just our little payback:-)