I've just set up a new theme on my site. It utilizes the Featured Images feature to add thumbnails to posts.
My old theme used Timthumb to do this. So, there is an image placed into every single post.
I want to retroactively go back and turn on the featured image for every single post, but I'd like to not have to do this manually. I'm wondering if there is a plugin that can take the first image in a post and assign it to the featured image slot? I've done some searching but currently can't find something to do this.