Registration forms are now found all over the Internet, and it is very important that they are compiled correctly. Information collected by them (such as name, age or gender) can be used by the service for personalized interaction with us. This leads to a feeling of comfort on the resource, and therefore increases the chances that the user will return to the site.
The fact that a user has visited Facebook more than once and is ready to provide the most banal information about himself, such as gender, can be used as a prediction that he will remain on the site.
Why gender is important on Facebook It turns out that even such seemingly insignificant user data can make a big difference, so it is worth spending a little time trying to make sure that the questions you ask the users are relevant and honest. To illustrate this, let's take a look at the question of the field from the example above. Many sites provide only two options:
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Sometimes you can find a third option:

Although this gives people the opportunity to escape from providing information, still these forms do not solve the issue of exceptions (some people consider themselves to be of both sexes), but this is not the main problem. It also consists in the fact that visitors do not understand why this data is required of them and how they will be used.
The following solution is proposed, which is used on the original
bagcheck.com resource:

Such a solution, as the authors are convinced, shows the website users why they are asked about the field (and yes, visitors to their resource know what a possessive pronoun is!) It also makes them think that the resource cares about their personal preferences.