The feature you are looking for is the lightbox. You can create one using the Lightbox link from the upper toolbar or the Lightboxes button in the Management Area. After the lightbox is created, a new dropdown will appear on your search pages which allows you to add the images to one of the lightboxes created. You can email a lightbox to a friend (no account on our site is required) or share it with other users (they need to be registered in order to see/edit the content of the lightbox). You also have a Buy/Download option which you can use to calculate download cost and download all the images saved at once.