Koprol, since 25 May 2010 called Yahoo Koprol, was an Indonesian social networking service, allowing users to connect based on location. Mobile users can use the site as a positioning service, without the need for a GPS receiver. Once logged in, users can see other members who were in nearby location. In Indonesia, this application has been released in Jakarta, Bali, Bandung, Surabaya, Surakarta, Sidoarjo, Yogyakarta, Semarang, Surakarta, Bengkulu, Medan, Banda Aceh, Palembang, Makassar, Balikpapan, Cirebon, Papua, as well as foreign countries such as Singapore, and USA.