Until recently, the only RSS aggregator that I could run on Linux was Java-based RssView. Last week, I found a few more, of which Straw looked the best. Partly because it is written in my favorite language (Python) and mostly because of its nice features.
It has some installation quirks which is why it took so long to install, but now I have an RSS reader that can handle HTML and looks much better (to see how I managed to install it, check my tech) page.
Definitely worth a try, but if you happen to find any more good ones, let me know.