Posterous was a great platform for publishing (and auto-cross-posting). The main inconvenient is that it's not free software and there is no way to host it yourself (though you can use a custom domain). So the goal here is to see how Wordpress could be tweaked to work as (much as) Posterous.
Since Posterous has passed away, this page in turn keeps track of the auto-cross-posting plugin that I use on my own Wordpress instance.
Following the closure of Posterous and the changes in my personal media landscape, here are a list of features I want in WordPress
Just some stuff not directly related to a posterous conversion.