Add it to your reading lists, friends! The best place to hear about the new new things will be at the Official Posterous Posterous.
What's new? Comment replies by email! Don't you hate how facebook and other sites just prevent you from doing the most natural thing in the world -- hitting that reply button? Well, all your dreams are coming true now. Hit that reply button.
Also... an updated reading list page. Out with the old, and in with the new!
Posterous -- it's how email and the web was meant to be. We should have low budget ads with two people dressed like a web browser and an email envelope dancing together.