I just found an annoying “bug” (I hope it’s not a feature) of WLW – when you open a post that is already published and make changes (like to correct Grammar!) – when re-publishing to MSN Live Spaces, it just updated the original post. When I posted the same update to my duplicate WordPress blog, it came out as a new post. So sorry about the dupes in RSS if you got them.
Again, this is the first release of a BETA program – I know it’ll get much better. As I continue to play with it though, you may see goofy things on both my blogs. If you do, I apologize now!