@Mia McPherson - Marcus is only the messenger, not the culprit. He has no control over how people actually use the plugin. However, I certainly understand where you're coming from. It's also worth noting that in the plugin description, the author wrote this:

WARNING: All images from Google Images (http://www.google.com/images) have reserved rights, so don't use images without license! So Author of plugin are not liable for any damages arising from its use.

I'm sorry you've been ripped off so many times.