Good article, and I wish you continued and even greater success! When you try Adwords, keep in mind your CPA (cost per acquisition) profitability should not be

Good article, and I wish you continued and even greater success! When you try Adwords, keep in mind your CPA (cost per acquisition) profitability should not be judged solely on a single month's price. If you find out most of your users stick around for 3 months, and you are charging $20/month, the average signup is worth $60. But if you spend $30 in Adwords and get a single signup, and think it isn't profitable because you spend $10 more than the signup, it is a mistake. Over the next two months you will make a $30 profit. Of course, this is over a three month period. But, if you have enough sign ups in the pipeline, you can see how well this works out.