Displaying information on maps

MappedTweets is a demo that uses Google AppEngine (Python SDK) to pin latest Twitter posts on a CloudMade map with server side scripting in Python. 
Two external APIs are used, one for submitting search queries to Twitter via its  Search API, another one for displaying map and geocoding CloudMade API.

The html map page reads the tweets data using a JSON format feed created by a Python script. Updates are made using HTML forms with Python scripts handling the HTTP POSTs to search for latest tweets.

The project code is open source, it can be found here at github.
Here is the demo itself. You can find here another GAE demo of displying and searching for information (herein images) on map.