- dogs
- cats
- monkeys
- unicorns
- women
- men
- people
- prostitutes
- Windows-users
- Linux-users
- Mac-users
- heroin addicts
- parrots
- businessmen
- clerks
- programmers
- wives
- husbands
- mathematicians
- physicists
- scientists
- moviecritics
- actors
- monks
- writers
- caterpillars
- fish
- pokemon
- cartoonists
- IT-professionals
- computers
- waiters
- robots
- Justin Bieber fans
- Nickelback-listeners
- classical music lovers
- oenophiles
- audiophiles