New features:
Mass category creation. Now when you click Bulk Create Categories you may enter full category path.
Example:
Arts & Entertainment/Celebrities
Arts & Entertainment/Humanities
Finance/Mutual Funds
Finance/Personal Finance
Finance/Real Estate
etc.
This will create root categories Finance and subcategories Real Estate, Personal Finance and Mutual Funds.
I used this to create all categories for the site www.newsenger.com in a seconds. Download sample file containing full categories structure of article directories suitable for Post Corrector.