The Wall Street Journal has just launched MoneyBeat, a new blog dedicated to global finance, markets, and mergers and acquisitions. Its analyzes the big trends and business news stories. MoneyBeat brings together six of the newspaper's most widely read blogs: MarketBeat, The Source, Overheard and all the Deal Journals across the globe, into a single, integrated hub. MoneyBeat is overseen by former Deal Journal and MarketBeat editor Stephen Grocer.