gnome-blog for wordpress.com blogs
This post will prove that, what I am writing from gnome-blog is successfully updated and uploaded.
editing again to say its success, and some more changes.
Directly this will not support ???.wordpress.com blogs. So for that in the preferences set
Blog Type : Self-Run Other
Blog Protocol : MetaWeblog
XML-RPC URL : http://{blogname}.wordpress.com/xmlrpc.php
Actually I am talking about this – gnome-blog
Happy Quick Blogging. 
Hey Ankur, please check this post to know more about syntax high-lighting: http://javabeanz.wordpress.com/2009/02/05/a-small-wordpress-stuff-shortcode/.
It works, where can I get doc for this tool? I need to make more configurations like attach tags, categories
Hey Ankur, I have installed it in Ubuntu 9.04. Is there a way I can manage multiple blogs and post as I can do it with Windows Live writer? Also is there a way to update existing posts written using gnome-blog? Is there any better tool?
Subin