Configuration of RSS/Atom Feed Subscriber to give sticky notifications of new feed items

[Andrew Brown]

I've just discovered Growl - brillant app thanks!

I'm particularly interested in the RSS/Atom Feed Subscriber.

My idea is that I link it to a blog RSS feed and then when someone
posts to the blog Growl will alert me with a sticky notification of a
new post which I can then read and dismiss.

I've tried lots of settings, but at the moment I only seem to be able
to get either;

1) No notifications at all

2) I receive notifications about all items in the blog as sticky
notes, I dismiss them and then they come back the next time the feed
is polled.

The feed I'm trying to work with is a blogger blog;

http://ifinddiscover.blogspot.com/feeds/posts/default

Could someone advise what settings I should use so that I can receive
sticky notifications of only new feed items which I can then dismiss
please?

Thanks,

Andrew