[Plugin: Advertising Manager] Does not work as advertised

I’ve tried so many plugins and it seems authors just miss the boat each time. This one does NOT automatically insert into posts and pages and seems to require users to go and fiddle with template files, how stupid. I have plugins for Joomla that do this perfectly without touching any template or core files, why is achieving this for WordPress turning out to be rocket science ???? I refuse to spend more than 30 minutes getting a WP plugin working. Why can plugins like Google+1 achieve the insertion of the +1 button perfectly but Ad Manager cannot ????

http://wordpress.org/extend/plugins/advertising-manager/