Planet Nexus

I am trying to understand where all my site will show up and how.

I understand that the small NexAds bar that is required to even use the service is one place but I also know that there are banners where my site will show also.

However, I am wondering if in order for my site to show on these other banner ads if I have to have one on my site in order to show up on other sites that have this setup?

The NexAds bar is mandatory to be part of the NexAds system, as you stated.

As long as the bar script is on your site, your NexAd will be displayed in rotation with other members sites on all ad units.

That's it. Nothing extra special that you have to do. Just have the bar displayed and NexAds will take care of the rest of the advertising for you.

We have a number of optional placed NexAds appearing throughout Planet Nexus. You can take a look around and see how the ad rotations work. In fact, just scroll to the bottom of this page and you'll see a NexAd at work right below this thread. The featured site changes on page refresh. There is an image version on our forum stats page of a different size: https://planetnexus.net/community/stats.php

Because you control how these ads look on your site, they are non-intrusive and won't clash with your site design. (Unless you intend them to! ) The optional NexAds take their styling from the colors you choose for your NexusBar.

Every time someone installs one or more optional ads on their site, everyone's exposure increases.

Awesome, thank you for the explanations