Maps are so cool!

A lot of settings influence the map. To show the maps correctly make sure: you don't have a password set for that gallery/your site, geography set to 'yes' and 'hello Smuggers' set to 'yes'.

There is a 150 marker limit on the maps. You can tag an unlimited amount of photos with their location though!

You can add the location after you have uploaded your photos, but you can also do that before you upload to SmugMug, using software with or without a GPS. For some more info, see dgrin.smugmug.com More specifically here, here and here.