The WordPress plugin Vox Crossposter is currently at version 0.3.1. The version numbers will stay below 1.0 until Six Apart creates an API for the Vox blogging service. Right now, the only option available to remotely update Vox is to use the Vox-generated mobile blogging (moblog) email address. It is for the reason previously stated that posts cannot be editted or deleted when doing so from WordPress. If a post is deleted from WordPress, it will need to be manually deleted from Vox; same concept for editting. If you edit a post in WordPress, a new Vox post will be created in adition to the original WordPress post that was crossposted. I hope you enjoy the plugin. If you have any questions, comments or criticisms, let me know.
(1) The categories/tags will not show up on the Vox post.
(2) The Vox post will not be deleted if you delete a post from your Wordpress blog.
(3) If a post is editted, a new post will be created on your Vox blog and the original will still exist (the original won't reflect the editted changes).
(1) If you are using Scribefire for Firefox (like I am), then two posts are being generated when you publish using this extension. Just tested this and it appears to be fine. 4.11.08
(2) If there are non-breaking characters in your WP entry, they will be converted to the "Â" character in the VOX post. There are two work-arounds until I fix this: (1) don't put extra blank spaces (by using the space bar) in your post, and (2) manually remove the  character from your Vox post. fixed in version 0.3.1
(3) Posting to your blog with Scribefire for Firefox, it appears that the plugin isn't even being executed.
(1) Wait for Six Apart to create an API so I can change to plugin to maintain entries on both blogs.
(2) Add option in sidebar to enable user to choose whether or not an entry is crossposted to Vox. fixed in version 0.2
(3) Add option to disable the "header" of the crossposted entry. In versions 0.3 and below, the crossposted entry contains some text and links pointing back to the originating Wordpress entry. added in version 0.4
Pete Wood, developer (email, website)
Some code from Evan Broder (email, website)
WordPress Documentation (website)
To all the users in the audience: please, for the love of every web developer in the world, stop using Internet Explorer! Try Firefox or even better, Opera.