You may be interested in prints, high resolution downloads, a license to alter an image or use it commercially. Or you may wish access to more like an image you saw in the open galleries and liked.
Clients may require access to their proof images or photos, friends and participants at events may want to share their photos.
This is what the Prints, Events, Clients and Friends sections are good for (cf. navigation box to the right).
Moreover, the Lumo-Art section enables you to license images or access images unavailable otherwise.