Sharing with Photo Stream
Photo Stream is Apple's own photo sharing and syncing service that is a part of iCloud. If you have an iCloud account, you can use Photo Stream as part of that service. Photo Stream was initially just used for syncing images between devices, and for that it works really well. But you can also use it to share images with friends, family, or colleagues.
Setup is pretty straightforward because it uses your system's iCloud settings. In order to activate Photo Stream within Aperture, just click on the Photo Stream button in the sidebar, and then click on the button that says Turn On Photo Stream. This will open a status sheet that says enabling Photo Stream, and once that are finished, Photo Stream will connect to iCloud and start downloading any images that is already in the Cloud.
You can set Aperture to automatically add any new images to your Photo Stream so that whenever you import photos from your camera they will be automatically uploaded to iCloud, and get shared...