Groupon is under fire after the popular "deal of the day" website announced it was halting all promotions related to guns.

Known for its popular perks of offering discounts on things like restaurants and massages, Groupon users could also find gun-related discounts -- until now.

Groupon provided no further explanation for its decision, except for the following statement from spokeswoman Julie Mossler to Daily Finance:

"All scheduled and current gun-related deals featured on Groupon North America, including shooting ranges, conceal-and-carry and clay shooting, have been placed on hiatus while we review internal standards that shape the deal inventory we feature…

The category is under review following recent consumer and merchant feedback."

The move has sparked outcry in some social media circles, especially amid the recent debate on gun control.

Some experts speculate Groupon's decision may have been in response to the shootings at Sandy Hook Elementary School in Newtown, Conn. Twenty-six people, including 20 children, were killed.

Darien Hill is a social media expert and said he is not surprised by this move. 

"My reaction is businesses have a social responsibility and it's not surprising Groupon would make this move to look at its policies and really protect its consumers," Hill said.

Hill said there are two other prominent Internet companies that you may use every day who have taken a stance against ammunition and firearms. Do you know who they are? Click on the video to see our interview with Hill.

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