The following patch is a follow-up to Steven Grimm's posted here. I adjusted it to fit into the 0.9b sources and added the possibility to switch the new functionality on and off via the property-panel.
After applying the patch the behaviour of rssowl stays the same unless one checks “Use newsview as browser for empty news” in the browser property panel. Then the program behaves like the following:
Download the patch: rssowl_internal_browser_0_9b.diff.txt
To use it, first get the sources, extract them into a directory of your choice, apply the patch by placing it in the source folder and then doing a patch -p1 < rssow_internal_browser_0_9b.diff.txt and continue with the buildprocess as described in the README.txt which comes with the source.