They can only be successful if you tell a few people (5-10 people at most). You also have to tell these people that what you are telling them is a secret. If it’s a secret that only 5-10 people know, you would only get 5-10 sales…or at least that’s what most people think.
The reason that the greatest secrets become successful is because no one can keep a secret. I’m sure that you and everyone else has told a secret or two (or more) in their lifetime. The greatest secrets that end up becoming successful are the ones that say, “Here are all of the amazing things that I do. Shhhh.”
The people exposed to that sales pitch simply don’t keep the secret. Word of mouth allows the secret to spread like wildfire similar to gossip. There is a Big Bang Theory episode that demonstrates how fast a secret spreads. Because of iPhones, the secret spread in a matter of seconds.
Although your secrets may not spread in a matter of seconds, they are going to spread in a matter of days. Soon, the secret becomes exposed and everyone knows about it.
It is important to establish a presence. However, some things you do should be kept a secret. Then, that secret gets exposed, and you get what you wanted in the beginning: more sales and visibility.