Consistent interface

Feed reader: one font, one style, one spacing. Source doesn't matter.

IRC client, email client, feed reader. They share one quality: unified interface. Styling lives on the client, not the server.

IRC: any network, any server, any channel looks identical. Plain text.
Email: rarely HTML. Same view. Focus on text.
Feed reader: no broken formatting, no logos, no menus, no flashing colors. Just words.

Website broken or hand-crafted masterpiece? No difference in the reader.

Simple, efficient, fast. No headache.