PeerAdvertisement duration and readvertisement.
When a Peer first connects to the JXTA network, it publishes a PeerAdvertisement. The Advertisement has a limited expiration time. If the Peer is to remain active for a very long time, does the Peer need to periodically (same as experiation time) re-advertise it's presence in the network? This is done by publish() and remotePublish()?