BLOGGER HELP PLEASE

I have a blog that has shown up in my reader feed, and is polutting it with it's blog updates. The only thing is, I don't follow this blog. It's spam. And I can not for the life of me figure out how to remove them from showing up in my reading list, without adding them first, which I will not do. Anyone know how to block a spammer from showing up in your reading list, that you don't follow? Any assistance would be great. Thanks