For most sites, there are no time or frequency restrictions for printing coupons online as of 2015. Many large discount sites exist for the sole purpose of distributing coupons, such as Coupons.com and DealsPlus.com. Many companies also provide coupons on their websites as an incentive to visit them.
While the Internet offers a limitless array of coupons, individual offers are sometimes limited in number. For example, Colgate.com's coupons have a limited print run and no longer appear on the webpage after being clipped a certain number of times. Some offers are also limited to a particular geographic location. For instance, The Parking Spot serves over 50 airports, but the coupons on the website are specific and are only valid at one location. These problems frequently compound on the large discount sites, as promotions are posted with minimal regard to any restrictions in the fine print.
Another trend is digital coupons, which function exactly like printable coupons without the need for hard copies. Kroger provides digital coupons on its website for a wide range of grocery items. Once clipped, these promotions remain active on the Kroger discount card until they are used or expire.