Testing in finance can be fairly ad hoc, said Steve Wilcockson, industry manager for financial services at MathWorks, and it varies by location and industry segment.

FORBES: Financial Models Bog Down in Corporate Bureaucracy

Due to lags in the oil price transmission to export revenues (of up to three months), Barclays Russian analysts in Moscow say they expect oil prices to ad to a fairly big first quarter surplus for Russia.

FORBES: Thanks to Oil, Russia's Trade Surplus Continues

But it still looks fairly minimal compared with the potential for a tablet whose cost could be substantially subsidized by ad revenues in a similar way that carriers subsidize cell phones.

FORBES: *Updated below.