1. Micro-Blog: Sharing and Querying Content Through Mobile Phones and Social Participation Zhonglu Wang 00850083

2. Overview Micro-blog Applications Block diagram of the Micro-Blog software architecture Design Considerations Battery Life and Location Accuracy Limitations and ongoing work

3. Overview A high level view of the virtual information telescope. User generated/sensed content are posted on a location-based map. Internet users browse and query this content. Queries are resolved through participatory or automatic sensing.

4. Micro-Blog Applications

5. Block diagram of the Micro- Blog software architecture The Micro-Blog phone client, implemented on Nokia N95, is approximately 6,000 lines of code using the Carbide C++ compiler supported by the Symbian OS platform2. The server is approximately 7,500 lines of code across C++, PHP, Ajax,and MySQL.

6. Design Considerations Energy-Aware Localization Energy-Aware Applications Incentives Location Privacy Spam Content Inaccuracy

7. Battery Life and Location Accuracy

8. WIFI+GPS

9. GSM+WIFI

10. Limitations and Ongoing work Location-Privacy in General Public Exploiting Accelerometers for Localization Integration with a Social Network Application Identifying False Content How Conclusive is User Study?