how to make plugin run at the backend only

I have FeedWordpress installed for my blog.

I notice one thing while modifying the code. After I changed the source code and reloaded the homepage, error message showed up. I was expecting errors, but not on the homepage. FeedWordpress plugin is loaded with homepage.

FeedWordpress plugin really should be a backend plugin, otherwise, everytime you load a page, feedwordpress plugin is also loaded, it gets really slow. is there a way we can make it run at the backend only ?

Thank you,