Here is a quick and easy way to take an RSS feed from a friend or a news site and post it on your blogger.com blog.
1) Enter the RSS feed URL in http://www.feedmyinbox.com
2) Enter your email to subsribe to the feed.
3) Setup your blog to update blog via Email.
Go to Settings —> Email & Mobile –> Email Posting Address (Also known as Mail2Blogger).
4) Forward the mails from feedmyinbox.com to this email.
5) You are done.
Note: You may want to save the blog post as draft when updating via email.