You can write feeds with HTML formatting directly, just like posting logs in the Wordpress backend. Its publishing editor is similar to MSN Space's and also supports copying in HTML format.
After registration, you can directly add feed content, or add a publishing link to the browser's toolbar (under IE it's the links bar, under Firefox it's the bookmark toolbar). This way, you can set a specific page as the title and link, then write the content for publication, which is as convenient as using del.icio.us. The difference is that it directly creates a Feed. You can also add a media link so that when the feed is subscribed to via a reader, the media can be played directly.