Gender# Data collection and storage can go wrong in other ways as well, with incorrect or erroneous options. Here are some screenshots from a thread of people collecting strange gender selection forms:
So many websites (esp. for online shopping) now ask for gender when making an account. Why do they need that data? To try to advertise to the user more? It's an extra step in creating an account and generally a mind annoyance at worst. If given the option (because sometimes you don't) I try to select 'Prefer not to say'. I'm not giving this company any more than they already have, they don't need to know more about me.