It isnโt especially well documented, but you can write your WordPress.com blog using software applications on your desktop PC (like w.bloggar), or in my case right now, your internet-enabled PDA. The key is to quote the โpath to APIโ (or however your software refers to it) as your blogโs address (simondickson.wordpress.com) followed by /xmlrpc.php. Obvious, really. ๐