Eine nette Zusammenfassung der Vorteile von SILC gegenüber IRC+SSL gibt es auf der Samadhi-Webseite: "SILC is much more than just about 'encrypting the traffic'. That is easy enough to do with IRC and SSL hybrids, but even then the entire network cannot be secured, only part of it. SILC provides security services, such as sending private messages entirely secure; no one can see the message except you and the real receiver of the message. SILC also provides same functionality for channels; no one except those clients joined to the channel may see the messages destined to the channel. Communication between client and server is also secured with session keys and all commands, authentication data (such as passwords etc.) and other traffic is entirely secured."

Weitere nette Eigenschaften: Sowohl Server und Clients von SILCNet als auch Samadhi stehen unter GPL. Die SILC-Spezifikationen und das SILC-Protokoll selbst sind IETF Internet Drafts.