WikipediA may be the First site that contain the complete information about the Global economy, It have the top 10 ranking on Google.
The Guardian Also have a Proper information about the Global Economy. This is also on top raking of Google related to economic blog.
Financial Times (FT) Also have a help Full information about the Global Economy. That was also on top raking of Google related to the news, and economic blogs.
The World Bank every rational person know about it. It has issues the Prospects of Global Economy 2012. It was helpful for all of us.
Reuters is the world’s leading source of intelligent information for businesses and professionals. It contain also a helpful information.