Socialight, another application for the mobile phone, works more like a tagging service.
It lets users create virtual "sticky notes" wherever they are with their cell phone.
They can then search for other IDs online or by calling a certain phone number dictated by the service.
Then if your friends approach your location, they're notified on their phone.
Similar services are also cropping up in the United States.
Dodgeball, which Google bought last year, alerts people to the locations of their friends and potential dates via text messages on their cell phone.
Usually these sites are free to use but standard text messaging fees may still apply as well as a small fee the dating service charges per message.
Mobile dating websites, in order to increase the opportunities for meeting, focus attention on users that share the same social network and proximity.