The romance entrepreneur first met a woman online 20 years ago, a chance encounter that left an indelible mark on him.
Spurred by his love of online dating, he created PDA with the needs of single guys in mind.
Consider how we make decisions about people in the real world.
If you are introduced to someone at a party, you know pretty quickly whether you’re interested in them, or whether you have enough in common to want to see them again.
Now we're bringing these cutting-edge techniques to the world of dating sites and Facebook.And they won't simply be looking to ward off temporary boredom or loneliness – one in five online daters will marry someone they meet online.Daters can join a cash-and-carry-style site such as Match ( the biggest in Britain, or opt for more personalised matchmaking skills.Harding gleefully conjures up a brave new world of date-stamped profile pictures (if you're in your forties, that glowing university summer ball picture just won't do) and "real time" profiles.Instead of tedious paragraphs about your GSOH (good sense of humour) and love of long walks, your profile will be linked to Facebook and Twitter, so prospective partners can check out your credibility with friends, and even what you did at the weekend.I hope many people will find a far happier future by using the site carefully and heeding the advice given.