For instance,
as a two-sided service ,
offline dating agencies have long made money by charging their clients:
men and women who want to date each other.
Nevertheless,
as the off-line dating business began to move onto the internet,
it has been able to attract a lot of men and women by charging very low prices or offering free services.
Here a new value of the customer access,
rather than the cross network externality between dating men and women,
emerges.
Of course,
in order to tap the monetary potential of patrons,
a firm needs to develop innovative business models and transform traditional markets into two-side or multi-side markets