Here is a strtegy for removing copyrighted content from a blogspot.com blog.
1. First, flag the blog by clicking the "flag blog" button at the top of the page. When you have clicked this button the words will change to "unflag blog".
2. Next, contact the blogger and tell them that you have flagged their blog, but that you will unflag it when the copyrighted content is removed from their blog.
3. Finally, if they do remove the content from their blog, you simply click the "unflag blog" button at the top of the page and you are done.
or,
3. If they still will not refuse the copyrighted content from their blog, get all your friends to flag the blog also. When enough people have flagged a blog, blogger will check the blog and might (but probably will not) remove it. Read more about how blogger uses the "flag blog" button
here.