The current stuff about dialling is pretty incomprehensible, as shown by the many confused comments here. No one "dials" IP addresses (or keys), and no one wants to, so the word "dial" shouldn't be part of the title or description. The word "key" would be better not mentioned until you start talking about implementation, and the brief high level "what it is" and "what it is for" stuff should come before implementation.
Iroh seems quite relevant to some projects of mine, but after reading the blog post and the main page, I still had no idea of that relevance until I had read over a hundred comments here (many of them confused about what Iroh was).