It gained only modest traction in Chicago, until a group of users decided their cause would be saving money.
They wanted to round up people to buy the same product in order to receive a group discount.
In the early years before revenue splits began to adjust as necessary, Groupon made money by keeping approximately half the money the customer pays for the coupon.
Currently, that split can vary depending on many factors.
On August 4, 2011, the company acquired Obtiva, a large Chicago, Illinois-based Ruby on Rails and Agile Software Development consulting firm for an undisclosed amount, in order to boost its technology recruiting capabilities.
On September 24, 2012, Groupon acquired restaurant reservation and discount site Savored for an undisclosed amount, providing Groupon with an inlet to higher-end restaurants.
In January 2016, Groupon signed a lease in Seattle for 42,000 square feet of space in the 1201 3rd Avenue building in downtown.
According to the SVP of product management, the original website was "designed for a deal of the day and the new site is designed for a marketplace." Following the website relaunch, the company rewarded a random selection of one million customers on November 20, 2013 with up to US,000 worth of "Groupon bucks".
Groupon recorded record-breaking holiday weekend sales in North America during the full (Black Friday through Cyber Monday) weekend of 2014 (Nov. 21), representing the most successful four days ever in the company's six-year history, with sales up more than 25% year over year.
Groupon employs a large number of copywriters who draft descriptions for the deals featured by email and on the website.
Groupon's promotional text for the deals has been seen as a contributing factor to the popularity of the site, featuring a distinctive mix of thorough fact-checking and witty humor.
Groupon filed its lawsuit on May 9 with the federal court in Chicago, two months after IBM accused Groupon of patent infringement in a separate lawsuit.