Siddhas are the scientists of ancient Tamil Nadu. They have done extensive research on every aspect related to worldly life such as health, medicine, religion, longeviety, alchemy, extra sensuary perception (ESP), reincaranation, astral existense, black arts and many other quests of human knowledge. On observation, some of the present inventions are already experienced by them and recorded in their literature. It is intended to share and nurture knowledge of members on these aspects to better understand the value of Past Tamilians' Scientific wisdom. A similar group in Tamil available at: http://groups.yahoo.com/group/Siddha_Tamil