Should i remove the "Signup With Twitter"

PHP
1

Hi, i am in the final stages of building my site and i am allowing users to sign up to my site using Facebook and Twitter, however i have just noticed that Twitter do not know / record your Gender, which is a requirement for my site…

My service needs to know your gender in order to work.

Question:

Should i remove the “Signup With Twitter” option or should i look at some way of getting the user to select their Gender after the join… thanks in advance

2

I’d collect it after they join so you don’t limit your user base.

3

You should give your users freedom to login with external profiles, just ask them after the registration which gender are they.