The actual schedule of these and other themed speed dating events varies as well and is determined by market demand and our ability to ensure a relatively close gender balance. Some cities schedule more themed events than others. Regardless of an event's theme or lack thereof as most of our events are unthemed speed dating events , Pre-Dating does not exclude people interested in attending a particular event who do not fit into the event theme, although it does reserve the right to limit attendance in order to ensure a quality experience for others attending an event especially those that may have a particular expectation of who will be attending. Founded in , we're the nation's largest speed dating service. At our African American Speed Dating Events, you'll meet up to a dozen other black single professionals in your age group through a series of six minute "pre-dates" at a local upscale restaurant or bar.