While the researchers found a significant jump in the popularity of the words 'vape' and 'vaping', they noticed a decline in searches related to vaping health and smoking cessation.

Less than one percent of millions of Google e-cigarette searches in 2013 and 2014 focused on quitting smoking, the study said.

"The e-cigarette industry, the media, and the vaping community have promoted the notion that e-cigarettes are an effective device for quitting smoking, yet what we're seeing is that there are very few people searching for information about that," said the study's senior author Rebecca Williams from University of North Carolina Lineberger Comprehensive Cancer Center in the US.

In an attempt to better understand the rapidly changing landscape surrounding e-cigarette use, investigators analysed Google searches related to electronic nicotine delivery systems (ENDS) from 2009 to 2014.

The data revealed that the number of ENDS-related searches is rapidly increasing with 8,498,000 searches in 2014 alone, up from only 1,545,000 in 2010.

Vaping and vaping-centric terms are also starting to overtake e-cigarette as the popular way to describe ENDS. While a growing number of searches pertained to purchasing, less than one percent of searches in 2013 and 2014 related to quitting smoking a traditional combustible cigarette.

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