OK, curiosity got the better of me - did a google - after reading all thsi I MUST get some!!!

It is also known as Chinese wolfberry, barbary matrimony vine, bocksdorn, Duke of Argyll's tea tree, Murali (in India), red medlar or matrimony vine -
Goji berries have been used for 6,000 years by herbalists in China, Tibet and India to:
protect the liver
help eyesight
improve sexual function and fertility
strengthen the legs
boost immune function
improve circulation
promote longevity
Goji berries are rich in antioxidants, particularly carotenoids such as beta-carotene and zeaxanthin. One of zeaxanthin's key roles is to protect the retina of the eye by absorbing blue light and acting as an antioxidant. In fact, increased intake of foods containing zeathanthin may decrease the risk of developing age-related macular degeneration (AMD), the leading cause of vision loss and blindness in people over the age of 65.
Moreifno here -
http://mammaearth.com/superfoods/goji-berries-500g/prod_54.html