The Weather Sensor Picture is below is a one wire device that connects to a wireless Access point which runs OpenWRT and has some simple scripts that collects data from the Weather sensor every minute in a cron job , and send it to a centralized server in Japan (We discussed building a Server in Africa with the servers in Asia/Japan)
Another Method in Running Live E and DAta gathering is based on P2P protocols using PIAX link is h3r3
PIAX is an open source framework to develop P2P applications. It integrates mobile agent based messagings and P2P discovery mechanisms transparently. This integration enables flexible, effective, and easy remote messagings. As a P2P framework, it supports multiple overlays. Currently, DHT, SkipGraph, LL-Net are supported. Application layer multicasts are also supported.