After I installed another template the feed display looked nice. When you install a few different feeds, the site takes quite some time to load.
All together I am average happy with this extension, but a big disappointment is that is does not work on my Ipod / Ipad. I asked questions about this two times, but this time, my mail didn't got answered both times! On my Ipod the feed will open, but you can't sroll, so that is a pitty.
Conclusion: extension is oké, to much feeds it gets quite slow, doesn't work on Ipod / Ipad. With the right template it can look nice.