/ Published in: JavaScript
A short photo id is a base58 conversion of the photo id. Base58 is like base62 [0-9a-zA-Z] with some characters removed to make it less confusing when printed. (namely 0, O, I, and l).
So that leaves an alphabet of: 123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ
So that leaves an alphabet of: 123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ
URL: http://www.flickr.com/groups/api/discuss/72157616713786392/