SocialAds, one of our popular extension has a feature of showing ads on a multiple sites. You can install SocialAds on your Joomla based website and the ads created on this site can be displayed on any type of websites like plain HTML site or Joomla, wordpress, ASP based sites and what not!
In SocialAds, you can create different types of zones. For instance, if you have a module position on your site which would be great for a banner, you can go ahead and create a zone such that it can accept image ads of the dimension of say 680X120 px. If you want to show ads created in this zone on other site, then from zone view go to the widget tab and you just have to copy the script code given on right hand side and paste in the HTML page or module of the other site.
You can customise the widget script by using the settings given on the left hand side of the widget tab. You just have to change the settings you require. The script will take the changes dynamically, you don’t have to save the changes.
In Socialads you have different types of targeting (like social targeting to target the people from their social profile, Geo targeting to target the people by their country, city and region and the contextual targeting in which you can add the word and show the ad if the page consist of the that targeted word).
In the multisite ads feature you can use social targeting if you've another site having extensions such as JomSocial, EasySocial or Community Builder.
Once you’re done pasting the code on your site the ads will displayed as -
Hope this works and now you’ll be easily able to setup multi site ads. ;)