Sorry, haven't looked into namecoin. But I would presume that as long as you already know the domain name, no MitM can happen, and no explicit trust has to be p

Sorry, haven't looked into namecoin. But I would presume that as long as you already know the domain name, no MitM can happen, and no explicit trust has to be placed onto anyone. This is true for, e.g., Tor hidden services, wherein if one knows the .onion name, they'll know if messages coming from that service are actually from that service, because they'll be signed by an ephemeral key that is itself signed by a key the fingerprint of which is the .onion name itself. (This is a gross oversimplification, and I could have made a mistake anyway..) If a similar scheme is true for namecoin addresses, then the situation is better indeed.