Hello, where can I sell service like this

Hello, I wrote an application that thumbs up comments on youtube. I don't want to sell this application but I want to sell thumbs up. Do you know where can I sell service like this?

You can sell it on this forum by buying Jr.VIP then buy a marketplace thread here

If you wanted to you could set up your own business/website and sell x amount of likes for $x. Althought I would think that its a tough market to break into as there are already many well established businesses offering this service. Anyway congrats on the application, wish I had the coding ability to do that.