Numerology has always fascinated me. I have personally used the Hans Decoz system and found it to be very accurate for myself and my life personally. If you’d like an interesting view on your Self, Personal Life and Relationships, these reports (though harsh at times) offer some insights as to areas you could improve.
As always, prediction/forecasting should always be taken lightly. There is a positive and negative side to each number, how these numbers are expressed in your life/chart can be determined by various aspects of your history/life.