Create a chrome extension and backend for admin to operate it.
Just like this one.
You must take a look at this or you will not understand what I am looking for.
startuptabs . com
After users download the extension, when ever they open a new tab in chrome, they first see the content we want them too.
The back end will control what sites are shown. I will need to have the ability to put sites in rotation and be able to show them evenly.