WYTM is part of Ian Grigg’s SSL Considered Harmful rant collection. His point is that SSL’s assumptions (that "man in the middle" attacks are a threat, but the client and server are secure) are wrong: clients and servers are constantly port-scanned, hacked and infected with viruses, while what’s sent over the line is pretty much unmolested.
Except he says it much better.
(Link via Kevin Marks)