High Quality Content by WIKIPEDIA articles! The Social Development Network (SDN), formerly known as "Social Development Unit" (SDU), is a governmental body under the Ministry of Community Development, Youth and Sports which works closely with the community and commercial sectors to foster opportunities for singles to interact in social settings in Singapore. Besides coordinating and facilitating dating activities offered by the private sector, it also serves to educate the public on singlehood issues. Other responsibilities of the SDN include providing the necessary infrastructure and support for the dating industry, as well as to ensure the professionalism of dating agencies through an accreditation council that was formed in 2007.