Am I a boy or a girl? [Details inside].

Not only at 10K, 20K, 30K, etc. parties, but also in ‘normal’ threads I sometimes have difficulties determine whether a certain Jelly is male or female.
Of course it is not at all important whether a Jelly is the one or the other, but sometimes when I have no clue of the Jelly’s sex when I want to respond to a member, I want to use the words she or he or another word or phrase that has to do with either sex (of the Jelly).
Recently, in a xxK party, I didn’t know again, but after some searching I found out the sex of the Jelly whose milestone we celebrated.
Half the time though, I cannot find clues.
So my question is this: Would it be possible/desirable if we state in our profile whether we are male or female for those who have no problem with publicizing this information.