There is a tip full Search Engine Watch Forums thread with things you can do to fine tune and optimize your new Yahoo Search Marketing campaign, after you preform the migration to Panama from a legacy Yahoo Overture account or a Google AdWords account.
Here is a summary of those tips:
- Ensure the migration tool actually worked right, you will often find things that don't match up and can hurt your campaign's performance
- Take advantage of Yahoo's improved geotargeting features, they work well now
- Utilize Yahoo's analytics tags to the fullest
- Yahoo has a domain blocking feature, make sure to use it when applicable
Mona Elesseily wrote the book on Yahoo Search Marketing named Mastering Panama, so if you prefer books, I know she did a ton of research and exploration before publishing this book.
Forum discussion at Search Engine Watch Forums.