Kathryn on "[Theme: Sorbet] Remove "Proudly Powered by Wordpress" from footer"

Here's a function you can add to modify the Infinite Scroll credit:

http://wordpress.org/support/topic/plugihow-to-remove-the-default-footer-proudly-powered-by-wordpress-theme-etc?replies=15#post-4223636

Don't edit the theme or plugin files directly, otherwise your changes will be overwritten when the theme or plugin is updated.

The best way to add the function is in a child theme, so your tweaks won't be overwritten when updating the theme. Here are some guides in case you haven't made one before:

http://codex.wordpress.org/Child_Themes
http://op111.net/53/
http://vimeo.com/49770088