You can now share negative keywords across all your Google AdWords accounts. They just need to be linked to your manager account for it to work. This should help you save time when you use the same negative keywords a lot.
When you create negative keyword lists in your manager account, they’re added to the Shared library of all your managed accounts by default. To apply a negative keyword list, you must add it from the managed account’s Shared library.
To make this list:
- Sign in to your manager account.
- Click the Accounts tab.
- Click Shared library from the menu on the left and select Negative keyword lists.
- Click + List.
- Enter a name for your list and add your negative keywords.
- Click Save.
There are more details on how this works in the Google help docs.
This feature went live on January 6th, while I was a bit ill.
Forum discussion at Twitter.