Just to re-iterate a request I made a long time ago. It would be great to be able to change the author of a post through MarsEdit. About 40% of the posts I do on TeleRead come from other authors who send their stuff to me for reposting. It's a real pain to have to post in MarsEdit as a draft and then go into WordPress and change the author and publish it. It adds a lot of extra work for me.
I'm keeping my fingers crossed that you get the time to add this feature.