Many users like to move quickly through their pictures as a first pass, selecting which ones to keep or throw away. To make this process more efficient, Photosmith for iPad has an Auto-Advance feature.
With Auto-Advance enabled, when selecting the reject button, a color label, or a star rating, the view will automatically advance to the next photo.
Once you reach the end of the current collection, the first photo will appear again.
Auto-Advance is talked about in Section 3.1.3 of our User Guide.