Reeder for Mac: Settings window turns semi-transparent when changing appearance settings.
Reeder for Mac - If you have unread news items, the dock icon looks like box filled with papers. When you have nothing to read, it looks like an empty box.
Reeder app - When reading an article, scrolling up and down shows a preview of the previous/next article, and by releasing this article is loaded.
Reederapp - By tapping and holding on an item, dragging left stars/unstars the item and dragging right marks it as read/unread.
Reeder - Dock icon with unread items indicator upgrade
Reeder app - website makes use of some nice CSS3 transitions.