Webmasters can actually rent these Zeus to clients. You may be limited by your internet connection bandwidth or the speed of your processor. My processor speed is only 266 MHz. Help is available within the Zeus Application. Yes as long as a web site Theme or subject follows the basic internet premise of reciprocal links.
Most sites have links to other sites that are similar or match a theme.
Bird sites have links to bird sites and so on. You might find a few Themes where the webmasters of that Theme will not allow links on their sites but these are rare. These web sites do not go far in the traffic dept. All in all Zeus works in every Theme we have tried to use him in. ThemeSites are the web sites that match the keywords you trained Zeus with.