Groupon 's competitors are seeing big investment , too . A new breed of ` ` ' premium '' Web sites increase flexibility by making mass deals . The market leader , Groupon , traces its origins back to 2008 . The site offers one deal per day in the cities it covers . The more users a site gains , the more leverage it has to score discounts .
A new breed of ` ` ' premium '' Web sites increase flexibility by making mass deals . The market leader , Groupon , traces its origins back to 2008 . The site offers one deal per day in the cities it covers . The more users a site gains , the more leverage it has to score discounts .