VSO stands for Voluntary Service Overseas. It is a UK-based international development charity, which has been sending skilled volunteers to developing countries in Africa, Asia, the Carribean, Eastern Europe, and South America. Volunteers are placed to countries where their skills are most needed.
Anyway, here’s what Wikipedia has to say about VSO:
Voluntary Service Overseas (VSO) is an international development charity that works through experienced volunteers living and working as equals alongside local partners. It is the largest independent (non-governmental) volunteer-sending organization in the world. VSO has offices in the UK, Ireland, Canada, the Netherlands, Kenya and the Philippines and a recruiting partner in India; as of December 2004, it has volunteers of 14 different nationalities on placement. Since its founding in 1958 through 2004, VSO placed over 30,000 volunteers in developing countries in Africa, Asia, the Pacific, the Caribbean and Eastern Europe.
VSO has established a recruitment base here in the Philippines known as VSO Bahaginan. For those interested in international volunteering, you may visit http://www.vsobahaginan.org.ph/.