It's fun and easy to make blog posts from Windows Live Writer. Now is supports a wide range of popular blogging platforms including WordPress 2.3. However the support to post tags while blogging is not enabled by default. Wordpress 2.3 has built in tag support similar as Ultimate Tag Warrior Plugin for wordpress. There are something needed to be done to enable the support to add tags while you post blog entries from Windows Live Writer. Windows Live Writer (WLW) uses an XML manifest file to determine what features a blog supports. By default it does a good job supporting WordPress without a manifest file, but that doesn't include support to mt_keywords (tagging) in XML-RPC methods. The included manifest file turns on tagging support in WLW.