If you would like to become a partner you can simply signup here
After you signup:
1. Go to "Hosted Galleries" tab
2. Choose "Promote Galleries"
3. Browse free hosted galleries using search engine, banners are also available for direct traffic. You can promote any site on the network
If you choose "top converting galleries", you'll see that WierdPorno is a top converter and probably is worth your try. Although it is entirely up to you and you can choose any galleries you like.