People without Posterous accounts used to be able to subscribe to email updates of Posterous blogs. I can't seem to see that option anymore though. Can anybody point me in the right direction? Or is the option no longer available?
It's still there, just search for "Subscribe to this posterous" on the blog (it should be in the bottom right corner) and it will offer you the option to subscribe through email.
I would publish the screenshot to clarify, but it doesn't allow because of the low reputation :)