It can import OPML files which you can generate in most rss readers, including RSSOwl or Google Reader.
The default layout may look quite confusing, as the app is displaying multiple feed posts on a single page.
A click on Tools Reading displays options to change that. You may also want to display the feed title listing at the top, which you can do with a click on the blue bar at the top of the screen.
The information can be displayed in the standard three pane layout that is listing the rss feed listing on the left, the article titles on the top right, and the selected message on the bottom right.
If you are a regular reader you know that I'm currently using the Java based desktop rss reader RSSOwl for all my rss feed reading needs.
It is a great program and I usually would not have the desire to move away from it, where it not for the fact that it is based on Java, and the only reason that I still have Java installed on the system.
While researching rss reader alternatives for the Windows desktop I noticed that there were not a lot that were still updated regularly.
And some that were, were simply to slow performance-wise and could not keep up with the number of feeds and the updating that I needed.
With that in mind, I found two candidates to replace RSSOwl as my main rss reader.
I've been using both for a while, and have not made a decision yet.