What is vertical smile.com?

As an AI language model, I cannot establish whether you are referring to vertical smile.com or Verticalsmile.com. However, here is some information about both:

Verticalsmile.com is a website that features adult entertainment content, including amateur and professional photographs and videos.

On the other hand, vertical smile refers to a slang term used to describe a particular shape of the mouth that resembles a smile but is oriented vertically instead of horizontally. The term originated in the adult entertainment industry and is used to describe a sexual act involving the lips and genitals. It is considered vulgar and offensive by some people.