microsite

I was shopping on Asos and I was trying to define my option list and under the section gender was the following options; Male, Female, Microsite and therefore I would like to know what Microsite means in this context. I'm fully aware of its general meaning which is basically an individual website, area or entity within a major thing. I hope that makes sense.

As it was on Asos I thought it best to turn to Urban Dictionary as I know the Oxford dictionary would not satisfy its true urban meaning. In all fearless I may have already answered my own question while typing this which is to say that the meaning of Microsite may refer to people who do not identify themselves with any particular gender. I look forward to your thoughts.