I think you can advertise for your free products by making take tests from various labs I found this lforums where you can look at different comparatives sites and I couldn’t see a single comodo product (yet) it will help you develop by discovering weaknesses and spread your product
Comodo’s antivirus is still in beta, but when it’s ready it will go there of course. And if on the other hand you look at www.matousec.com, you’ll see that Comodo’s firewall beats all competitors.