Thanks for the link. I see what you mean in Netvibes.
But I am still a bit confused. When I look at http://sarahlouisek.com/feed/, there are 12 public posts shown. If I set my number to 5 feed settings, it should show 5 posts there too, rather than 12 posts. That's what I gather from the info below, which is from the WordPress site under "Support." Can you help me make sense of the discrepancy between what you wrote and what the site claims?
FROM WORDPRESS SITE
Every WordPress.com blog has multiple feeds. The main content feed can be accessed by adding /feed/ to your blog’s URL.
As an example, here is the feed of the official WordPress.com blog:
Settings >> Reading Settings
Syndication feeds show the most recent lets you set how many blog posts will be sent out at once via your RSS feed (located at http://your-domain.wordpress.com/feed/).