From the UK's Times Online in an article titled "Pardon, mamselle but can I ring your bell":
"If you are on the hunt for love in Paris, forget cafés and art galleries and rent a bicycle instead. Residents and visitors have found that the city’s new self-service bike scheme offers the best chance of flirting with strangers.
"The emergence of a two-wheeled mating service has been one of several unintended consequences of the runaway success of le Vélib’, the sturdy grey bicyclettes that the Mayor of Paris, Bertrand Delanoë, unleashed on the streets in mid-July."more...
Look-out on-line dating services! You've got new in-line competition. With all the matching, Velib should begin to offer tandems.