I'm big on usability. If something doesn't work how you would expect it to, then there is something wrong. For some reason, I always felt the need to doubleclick an item in FooReader.NET to go to the actual blog post. Yeah... sure... a link was provided in the reading pane, but it felt awkward (for the lack of a better term) to move your mouse just to go to the site.
I updated it a bit so that if you double click an item in the item pane, it opens a new window and takes you to the blog post. It just feels right.