10. The plugin must not embed external links or credits on the public site without explicitly asking the user’s permission.
All "Powered By" or credit displays and links included in the plugin code must be optional and default to not show the links. Users must opt-in to displaying any and all credits and links. Plugins may not require credit or links in order to function. Services are permitted to brand their output as they see fit, provided the code is handled in the service and not the plugin.