Well to be perfectly fair, Nigeria is just as dependent (if not more) on oil than Algeria. Oil accounts for 40% of Nigeria's GDP compared to Algeria's 30%. However it is true that proportionally Algeria's export earnings are more oil derived than Nigeria.
Alex, the banking sector in Nigeria is far more ahead that those in Algeria and the Nigeria banks are booming. They buy a lot of banks in Africa and invest in other banks.
Also the telecom, stock exchange of Nigeria are booming. And also the mining, agriculture etc..
Nigeria has a very open economy and their FDI is growing..
Algeria has the potential to become a emerging market, but the need to open their economy, modernise their banks, stock exchange and other companies..
Nigeria: banks at the top
Date: 16.10.2008 The largest financial institutions in West-Afrika are in Nigeria. In the top 20-list 19 banks were Nigerian banks . These banks have made considerable more profit, with as head Intercontinental Bank' and ' First bank or Nigeria'. The position of banks are development and rising, companies in Nigeria improve more then ever. There is now a sufficient capital for investments of companies in Nigeria.
The financial service is the top of the Nigerian macro-economy at this moment. The increase was used by the government that wants to make Nigeria the financial `hub' of Africa, the current increase can be now attributed entirely to private companies. The market atracttes a lot of investors. With a population of 140 millions and a strongly rising middle class is the financial sector becoming enormous.
Source: Dutch ministery of economic business
http://www.evd.nl/zoeken/showbouwsteen.asp?bstnum=217864