The webpage discusses how the author combined Google Application Engine with Amazon's S3 and SQS services to build an efficient search engine that imports and indexes bookmarks from a del.icio.us account. The article also points out challenges encountered due to Google's Python runtime restrictions and offers solutions, including custom modules that facilitate communication between Google and Amazon web services.
Using Google App Engine With Amazon Web Services
http://idlewords.com/2008/08/using_google_app_engine_with_amazon_web_services.htm