Update 2: Okay, people have convinced me to use Escrow. So I shall. What should I use?
You need to choose and contact a person from this list :
https://bitcointalk.org/index.php?topic=855778.0They will hold some of your funds, like funds require to pay some 10 to 20 members. So that some people will freely test/sign up your services and you need to pay them directly. Once you get enough number of sign up you can declare here "finished" and escrow will refund your funds after some fees.
Yes you are correct many people are afraid those scams, they are fed up with all things happening around them so it's better find one of the best escrow so that many people here will sign up. In this you can share you programs freely, so that many people will show interest towords your programs.