I discovered a fun online programming console, which is easy to drop in some Groovy code, and it compiles it for you and shows the results. Cool interface. Check it out here:
http://groovyconsole.appspot.com/script/57005
...and the technologies used are:
http://gaelyk.appspot.com/ Google App Engine GAE + L+ Y=groovy + K to make it a unique search term...
as well as the template service called http://grails.org, and http://groovy.org
and how to make really big databases fast using sharding.
http://www.codefutures.com/database-sharding/
http://www.codefutures.com/mysql-replication-howto/
and a few other sites of interest...
http://groups.google.com/group/google-appengine how to develop
http://code.google.com/appengine/docs/
http://code.google.com/appengine/docs/python/tools/uploadingdata.html
http://code.google.com/securedataconnector/ (allows connecting to data behind your firewall)
http://code.google.com/appengine/docs/python/config/cron.html
http://code.google.com/appengine/kb/java.html
http://code.google.com/appengine/docs/java/overview.html
http://dl.google.com/eclipse/plugin/3.5
http://code.google.com/webtoolkit/
http://code.google.com/eclipse/docs/users_guide.html
http://www.mashupcamp.com/wiki/index.php/FutureOfEcommerce
http://remix.bestbuy.com/) allows developers access to product catalog and store information found on BestBuy.com. Developers can build interesting mashups utilizing this data.