Xstrata and Glencore are in talks over an all-share merger that could create a combined group worth more than $80 billion, shaking up the industry with its biggest deal to date.

Glencore, the world’s largest diversified commodities trader, already owns 34 percent of mining group Xstrata and a tie-up between the two Swiss-based companies — in a deal which would trump Rio Tinto’s $38 billion acquisition of Alcan in 2007 — has long been expected, as Glencore aims to add more mines to its trading clout.

Now that Facebook has filed its hotly anticipated initial public offerings, analysts told Reuters correspondents Alexei Oreskovic and Alistair Barr that the social networking company’s honeymoon with investors may already be over.

Despite the massive IPO, CEO Mark Zuckerberg will exercise almost complete control over Facebook. Here is Zuckerberg’s letter to investors.

The graffiti artist who took Facebook stock instead of cash for painting the walls of the social network’s first headquarters made a smart bet, The New York Times says.