Too many RSS articles so bottom ones get missed

I have a few RSS articles that require I scroll down the list to see them. This often means that I forget to read them.
Is there any way to make "columns" so that there is no need for scrolling?

If not, is there a way I can make "sub menus" for RSS feeds e.g:

Friends
- Tom
- Sue
- James

Computers
- Gizmodo
- Lifehakcer

News
- BBC
- CNN

Thanks