Abstract: Methods for matching a first user of an online service site to a second user for jointly attending an event of mutual interest are disclosed. A first event query is received from the first user. In response, a first event listing including the event of mutual interest is transmitted to the first computer system. A selection of this event is received, together with an admission matching proposal therefor. A corresponding admission availability entry is added to an event announcement page, which is subsequently transmitted to a second user. If the second user so desires and so selects, then an admission matching offer is received by the online service site.