Hi Bediger, thanks for your advice so far, I feel like I should not start the service. I don't know why you feel there will be spam, every service gets abused

Hi Bediger, thanks for your advice so far, I feel like I should not start the service. I don't know why you feel there will be spam, every service gets abused by spammers I know. But we thought of preventing spamming this way: Advertisers do not send the ads directly to users, all they do is indicate to us that lets say 'we want to send this message to women who are between 25 to 45 years old', Then we will perform a search on our database and find the users who match that criteria. And send them the ads our selfs to only those users matching that criteria. Again thanks for you're opinion, it will help me think about it.