 Many revisions have since been made to the various membership schemes, including an annual membership fee.From October 2009, all membership schemes were removed and SDN extended its benefits to all resident singles without any fees.Currently, singles aged 20 and above who are Singapore Citizens and Permanent Residents can join the network's database to receive communications and information on dating, or register with www.sdn.sg as a user to enjoy its online services, such as the chat function, forum discussion and personal ads, or to access information on events and other resources on dating and relationship.