You don't have to sign up every time you post, just the first time. Posterous doesn't even need a sign up. You can actually just start posting by typing in a t

You don't have to sign up every time you post, just the first time. Posterous doesn't even need a sign up. You can actually just start posting by typing in a text-area with a post button - your email client that you already use. If you know of an easier way, I'd honestly like to know about it.