There are many options to advertise on

1– By Sponsoring an official contest: you’ll pay the amount or send the gift and will do the rest! You’ll get more visibility than a normal listing + a “dofollow” link to your website in the contest description.
2– By placing a small link on every page on the footer of the website!
3– By placing a link with a short description on the right side of the website.

To advertise on contact me via contact page!