The family filter attempts to block:

Adult only sites
Drugs
Gambling
Tasteless/Gross
Sex
Profanity
School Cheating
Suicide/Murder
Weapons
Hate sites
Lingerie
Nudity
Porn

The family filter does not block:

Alcohol
Chat
Games
BBS/Messages
Personal Info
Tobacco
Current Events
Personals
Medical Material
Jokes and Humor