Factbox: Big tobacco companies bet on e-cigarettes

(Reuters) – Big tobacco companies are jumping on the e-cigarette bandwagon with a range of strategies to tap into a market that some analysts believe could eclipse traditional cigarettes in 10 years. They are competing with hundreds of smaller companies that have sprung up in the last few years to exploit the fast-growing but largely unregulated global e-smoking market, which Euromonitor estimates was worth more than $2 billion in 2012. …