Script Summary: Makes it easier to load several GC codes to a bookmark list
After installing this script go to the bookmark list page (one of your own) and instead of entering just one code into the 'Bookmark It' textbox, past in a comma separated list
Click the button and it will replace the list with the first one in the list and when the page reloads the next one will be populated ready for you to click the button again
I'll add some screenshots at a later date to make this more obvious



