I learned how to set up the weblogger.el for blogging at wordpress.com. One of the reason to choose wordpress.com is its being open source and thus the flexibility.
Following tolchz’s post, it’s fairly easy to set up weblogger.el.
One tip worth mentioning here is how to set up the “server’s endpoint”.
For example, if the url of your blog at wordpress.com is name.wordpress.com, then the server’s endpoint is: name.wordpress.com/xmlrpc.php