Requirements for each event vary with the organizer.
Specific age range based on gender is a common restriction for events.
Many speed dating events are targeted at particular communities: for example, LGBT people, polyamorists, Some feel that speed dating has some obvious advantages over most other venues for meeting people, such as bars, discotheques, etc.
Speed dating is a formalized matchmaking process of dating system whose purpose is to encourage people to meet a large number of new people.
Its origins are credited to Rabbi Yaacov Deyo of Aish Ha Torah, originally as a way to help Jewish singles meet and marry.