It's not a secret that casual games, including online flash games are the fastest-growing segment of the gaming industry. So I cannot see any reasons why you shouldn't start earning money by providing access to free online games. Believe me, it's not a rocket science, there is nothing complex here. All you need to start your own flash arcade site - are several interesting free flash games and a powerfull content management system which will help you to manage those games along with other aspects of your gaming site.
So, let me introduce Pro Arcade Script - the ready-made solution which allows professional and amateur web developers to create and maintain superior flash arcade sites.

Admin's interface - content blocks management.
You may ask, why should I use this script and what makes it so special? Well, here are the key advantages: