Online dating is not unlike trying to meet someone in the real world. It can be very frustrating, but it can be very rewarding, too. And you certainly learn a lot from the experience.
Take Jane Coloccia, the subject of this Sydney Morning Herald article. She has used online dating a lot over the years, and has clearly had her share of disappointments. Yet she seems much wiser as a result, and has put what she has learned into a book.