I have just read an article about desktop blogging clients (article you can read here) and the first thing that I did was trying to use them for posting. I have tested all of them and got bad result – no one did work fully correctly with my simpe wordpress blogs. I know it my fault – yes I need spend some time for correctly setup everything but from another side all this clients have very poor instructions and general usability as well. Most error just have general phrase with any direction what to do for users. Course for that \maybe\ are nonprofessional authors and “nonprofitable” factor – for now blogging is mainly an amateur activity (not totally but …)
So all my test ended on uninstalling all these software and cleaning registry. And I propose you best cheapest and soonest way for making post to your blog like flash – just add bookmark in you browser with link to you post creating page and put it some easy for click place (desktop, firefox bookmarks toolbar, any kind of speed menu etc) and that’s all what you need for make your post like superman ;).

Of course, if you have good skills in programming you can make your own tool but please make it perfect! I know you can ;)