foo is an obsolete iTunes category or sub-category

On 30 June, 2006, Apple revised the list of valid iTunes categories and sub-categories.

The email cited above requests that you Please take the time to change your podcast feed as soon as possible. The list below may be helpful in identifying which categories were added or removed:

• Arts & Entertainment
• Architecture ⇒ Design
• Books ⇒ Literature
• Design
• Entertainment ⇒ TV & Film
• Games ⇒ Games & Hobbies/Video Games
• Fashion & Beauty
• Food
• Literature
• Performing Arts
• Photography ⇒ Visual Arts
• Poetry ⇒ Literature
• Science Fiction ⇒ Literature
• Visual Arts
• Audio Blogs ⇒ Society & Culture/Personal Journals
• Business
• Business News
• Careers
• Finance ⇒ Business News
• Investing
• Management ⇒ Management & Marketing
• Marketing ⇒ Management & Marketing
• Management & Marketing
• Shopping
• Comedy
• Education
• Education Technology
• Higher Education
• K-12
• Language Courses
• Training
• Family ⇒ Kids & Family
• Food ⇒ Arts/Food
• Games & Hobbies
• Automotive
• Aviation
• Hobbies
• Other Games
• Video Games
• Government & Organizations
• Local
• National
• Non-Profit
• Regional
• Health
• Alternative Health
• Diet & Nutrition ⇒ Fitness & Nutrition
• Fitness ⇒ Fitness & Nutrition
• Fitness & Nutrition
• Relationships ⇒ Sexuality
• Self-Help
• Sexuality
• International ⇒ Society & Culture
• Australian
• Belgian
• Brazilian
• Canadian
• Chinese
• Dutch
• French
• German
• Hebrew
• Italian
• Japanese
• Norwegian
• Polish
• Portuguese
• Spanish
• Swedish
• Kids & Family
• Movies & Television ⇒ TV & Film
• Music
• News ⇒ News & Politics
• News & Politics
• Politics ⇒ News & Politics
• Public Radio ⇒ News & Politics
• Religion & Spirituality
• Buddhism
• Christianity
• Hinduism
• Islam
• Judaism
• New Age ⇒ Spirituality
• Other
• Philosophy
• Spirituality
• Science ⇒ Science & Medicine
• Science & Medicine
• Medicine
• Natural Sciences
• Social Sciences
• Society & Culture
• History
• Personal Journals
• Philosophy
• Places & Travel
• Sports ⇒ Sports & Recreation
• Sports & Recreation
• Amateur
• College & High School
• Outdoor
• Professional
• Talk Radio ⇒ News & Politics
• Technology
• Computers ⇒ Tech News
• Developers ⇒ Tech News
• Gadgets
• Information Technology ⇒ Tech News
• News ⇒ Tech News
• Operating Systems ⇒ Tech News
• Podcasting
• Smart Phones ⇒ Tech News
• Software How-To
• Tech News
• Text/Speech ⇒ Tech News
• Transportation
• Automotive ⇒ Games & Hobbies/Automotive
• Aviation ⇒ Games & Hobbies/Aviation
• Bicycles ⇒ Sports & Recreation/Outdoor
• Commuting ⇒ Games & Hobbies/Automotive
• Travel ⇒ Society & Culture/Places & Travel
• TV & Film

You might be able to find help in one of these fine resources.