I would like to propose that user agents will be able to pass a user statement regarding to its gender via an http header. the content must be a string, but not specified (as the definition of gender is flexible and might change from a culture to a culture and by time). I see 2 main use cases:
- Some languages have grammar cases which are gender-related.
- The suggestion will allow to user to make a statement regarding to its gender once. Instead picking his or her gender or their gender each time.
The header should be optional.