From Facebook Developer Wiki

[edit] He/She

Could you include "He is" "She is" or "They are" when unspecified? It would be really useful instead of querying the db specifically for that. Thanks!

+ I second that 666135104

+ I third it - and also "He has", "She has", "They have" (and all the other tenses). 514085279

+ I'd be happy with as little as "he / she / they" as it would be useful for sending invitations eg. <fb:name uid="$user" firstnameonly="true" shownetwork="false"/> would like to share what < he/she/they > recently learnt, with you. but I can just use, the little less personal, 'they' all the time.

This is the default behaviour... it is what happens when you use the call with no params. Documentation needs updating, that's all - will do that now. 273100511 04:54, 15 October 2008 (PDT)

[edit] Hers?

Where does "hers" come into play? It's possible to tag an 's' onto the end of a possessive pronoun, but then "his" becomes "hiss".