It has got a sad record of disease, brutality and corruption, and fewer inhabitants than Sheffield. But Equatorial Guinea is one of the key targets of the west's new "scramble for Africa". This mini country located under the armpit of the West African coast has immense quantities of oil; it is currently exporting $4.5bn worth (about £2.5bn) a year. Yet such an astonishing bonanza appears to have done most of the country's citizens no good. Who then, is getting the benefit?