telepathy-salut is a Telepathy Connection Manager which is used for activity sharing and presence without a server. It is used for the "children sitting under a tree" collaboration scenario, with no other network infrastructure.
salut uses avahi, so you can see what is published by using avahi-browse or avahi-discover. This can be useful to check what salut sees on the network.
In the example below, we have two salut "buddies" (actually both on the same host, using multiple instances).
The buddy records are in the "iChat Presence" section. Command line equivalent: avahi-browse -t _presence._tcp
Clicking on one of the buddy records shows the buddy properties, including nick (fred) and colors:
There is a shared activity, with both buddies in it. The activity shows as _olpc-activity1._udp and you can see its properties below. Command line equivalent: avahi-browse _olpc-activity1._udp
salut also uses _clique._udp for activity presence.
See this discussion thread, http://firstname.lastname@example.org/msg24799.html.