I once worked for a client that was so certain they were going to get millions of users within three weeks of launching their mobile app with nothing more than

I once worked for a client that was so certain they were going to get millions of users within three weeks of launching their mobile app with nothing more than about $100 in Facebook ads marketing. That didn't work out too well for him. I also don't agree with the 'Field of Dreams' marketing strategy. I've seen it fail too many times.