Requirement for each event vary with the organizer.Specific age range based on gender is a common restriction for events.
The largest speed dating company in Australia is Fastlife. Several online dating services offer online speed dating where users meet online for video, audio or text chats.
Because the matching itself happens after the event, people do not feel pressured to select or reject each other in person.
On the other hand, feedback and gratification are delayed as participants must wait a day or two for their results to come in.
According to the New York Times, participants in speed dating experience an average of 2 in 10 or 3 in 10 matches.
Online dating participants, in contrast, only find a compatible match with 1 in 100 or fewer of the profiles they study.