I'm struggling with how to use this, and why it is a feature at all? Please explain? Thank you.
Hello John,
Blog Images is used like an 'official' image for your blog post. Blog image will be used at the frontpage and it is look nicer for some themes: http://screencast.com/t/qqjsyl6UVDMV . And also Blog image will be used in the featured post slider: http://screencast.com/t/oNGZH7coG2dB . Hope this helps.