A lad at work runs this: www.datemyplate.co.uk

Basically it's a bit like a faceparty type thing. If you spot someone in a car who you think is a bit of alright you can go on and enter their reg and see if they're registered and send them a message if they are.

You can also search for people local to you. It's alright, good bit6 of harmless fun, and he really wanted me to plug it