A wordpress.com blog user has reported a problem to me that whenever they use the "Post to WordPress" function they receive this error message:
"Sorry, you are not allowed to publish this post on your blog."
I believe that error message is being generated on the XML-RPC call back to wordpress.com. In other cases this call (and the Post to WordPress) button seem to be functioning normally. Can anyone tell me under what condition a XML-RPC call to metaWeblog.newPost or metaWeblog.getPost might return this error?