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A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

I bet you’ve never pictured gas to sound as eloquent as a trumpet player or resemble the music the opera. However, these quirky and extremely cheeky advertorials by illustrator: Siddhi Yadav and photographer: Denzil Machado are making reference to just that. Entitled ‘Gas Aid,’ the tagline reads “Your gas entertains no one.” These illustrated posters are just what the doctor ordered: some humor to an ten grotesque gesture...

In economics, a luxury good is a good for which demand increases more than proportionally as income rises, and is a contrast to a "necessity good", for which demand is not related to income. Luxury goods are said to have high income elasticity demand: as people become wealthier, they will buy more and more the luxury good. This also means, however, that should there be a decline in income its demand will drop...