As an on-location and outdoor photographer, a good, unique and interesting photo shoot location is crucial for me. And having a good but a very short memory is definitely not helpful. That's why I always have a notebook with me where I keep all the photography notes and ideas for projects. However, it was extremely hard for me to note down a place that I just visited for a photo shoot, especially that I like to have a picture of a location at hand. I have also been using the Evernote application for few years already and it's the best note taking application for me, especially that it syncs with Evernote apps on my mobile devices (for free!). Only recently I discovered that Evernote is also awesome for saving photo shoot locations. Evernote for mobile devices will not only save automatically the GPS coordinates of a note but you can also take a picture of a photo shoot location from within the Evernote app and attach it to the note (you can also take a picture with you built-in camera application and attach it later to a note).
I attached some screenshots for an iPhone above and below. To see the GPS coordinates where the note was taken, you have click on the 'I' icon at the top. It will open a window with all the information about the note and at the bottom you will have a map: click on the map and it will open up a native maps application where you can zoom out. You can also move the pin on the map in case Evernote did something wrong with the coordinates or if you create the note somewhere else but you attach a picture taken somewhere else. Remember that if a picture you take also has embedded GPS coordinates (well, that actually depends on your phone and the setting in your phone) so you can also take GPS coordinates from a picture.
I now have a separate Evernote notebook 'Photo Shoot Locations' where I save the potential places for the upcoming shoots. I can easily browse them on my iPad, especially when I meet with a client or with my team when we brainstorm for next photo shoot. Simple, easy and free :)