Envy motivates Facebook users to post their fabulous vacation photos, UBC study says
![Envy motivates Facebook users to post their fabulous vacation photos, UBC study says](http://www.vancouversun.com/cms/binary/11530407.jpg)
What's driving your Facebook friends to post all those photos of their fabulous vacation? Envy may be the key motivator, according to new research from a University of B.C. professor.