Thinking emoji

There is a secret button on the website.

I am sorry

You've got to be over 18, and you've got to contact Imgflip. That's really all I know. There could be more details, though.

I am sorry

https://imgflip.com/careers

You need to be on imgflip for two years and be an adult

Could you do something about the nude posters?

So, from what I remember:

You apply, and then the mods vote.

Another way is to be invited.