If earning $100/month is a failure, mine will be an epic failure. I'm totally not earning anything, plus it's still running totally based off my own wallet. A

If earning $100/month is a failure, mine will be an epic failure. I'm totally not earning anything, plus it's still running totally based off my own wallet. A way to indicate whether it is a failure or not is whether or not it continues to grow, if you're targeting a very specific market it is very unlikely that you will earn a lot of money (I personally don't have that much amount of email that I need InboxCleaner to do some job for me...). If however it is an awesome thing, people will get to know it and start using it, then it won't be a failure.