Challenges for search in wireless networks
No full support for routing and search can be given in
q Wireless and mobile networks
q Sensor networks
q Overlay, peer-to-peer networks
     Advantage: More flexibility to set up and expand networks,
                        less overhead in managing networks with high churn
Disadvantage: More expensive search by exploration of the network
The Internet itself exhibits unstructured growth and churn, but
q the IETF (Cisco, Juniper ...) established reliable routing and
q search engines (Google, Yahoo, ) provide content exploration
q New IETF WG on Routing for low power & lossy Networks