AdWords Scripts now support negative keyword and excluded ad placement lists, and the ability to share them across campaigns. Follow these links for implementation details and code examples:

• Shared negative keywords: docs, code snippets
• Excluded placement lists: docs, code snippets

We have also released a new solution named Master Negative List that uses this feature to maintain a master list of negative keywords and placements for AdWords accounts. The list of negative criteria can be managed from a spreadsheet. Separate versions are available for AdWords accounts and manager accounts.

Special thanks goes to Terence Nip, who implemented this feature during his summer internship at Google.

Give this feature a try and let us know what you think! You can post your questions and feedback on our developer forum.

Anash P. Oommen, AdWords Scripts Team

Source: Google Ads Developer Blog