Intrusion Detection RFCs

It's been three years since I think I blogged on this topic, but I noticed three RFCs on intrusion detection were published this month:

• RFC 4765: The Intrusion Detection Message Exchange Format (IDMEF)


• RFC 4766: Intrusion Detection Message Exchange Requirements


• RFC 4767: The Intrusion Detection Exchange Protocol (IDXP)

Is anyone using these? I think Prelude does, but how about commercial products?