Hello hotforblockchain! I highly appreciate your interest in our project. If you are talking about our marketplace, which can be found here - https://www.cryptomarketads.com/marketplace, then currently you can only post your services and offers. You can advertise on Bitcointalk by purchasing someone's signature spot. If you are one who offers your signature spot for sale, you can place your service on our marketplace where you specify how many posts per day you make and what is the cost for each day. The buyer can buy as many days as he wants and he can track whether the Bitcointalk signature poster makes the posts and whether he/she is wearing the signature on this account. Check out the existing orders to find out more about them, or publish your Bitcointalk signature for sale - we are going to buy it during the bounty campaign. You also have to set up an appropriate price for your service or we are going to negotiate through our in-built chat with each service provider.