Google Photos (currently named Picasa Web Albums) added Flash slideshows which can be embedded in web sites. This new feature is demonstrated with some of our procedure guides below. You can choose the photo size: from small (144 px) to extra-extra large (800 px).
Thoracentesis: A Step-by-Step Procedure Guide with Photos
Central Line Placement: A Step-by-Step Procedure Guide with Photos
Central Line Placement with Ultrasound Guidance: A Step-by-Step Procedure Guide with Photos
Picasa Web has a mobile version and map locations.
Online Photo Sharing in Plain English
Picasa Web Albums introduces embeddable Flash slideshows. DownloadSquad.com.
Put your photos on a map, and Picasa on your phone. Official Google Blog, 06/2007.