In 2008, the United States NTIA began a major effort to assist consumers in the purchase of digital television converter boxes.
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The United States National Telecommunications and Information Administration (NTIA) ran a coupon-eligible converter box (CECB) subsidy program for the ATSC conversion, but did not subsidize the purchase of a smart antenna to mitigate the cliff effect of digital television, and most CECBs do not support smart antennas.
Donald J. Newman and Lawrence Shepp found a generalization of the coupon collector's problem when m copies of each coupon needs to be collected.
ISDA's discussion of market convergence, including an extensive discussion of irregular coupon periods.
In the game Retro City Rampage, several of Destructoid's staff appeared in the game as unlockable player skins that are available by going to MJ's Face-R-Us and entering the coupon code DTOID.
The "Buy it by the Brick" exclusives included a Jack the Ripper Limited Edition figure, a coupon for the AVP: Aliens collector's set and a coupon for the Great Cthulhu colossal figure.
ChiTown Deals was a direct competitor in the deal-of-the-day group coupon marketplace pioneered by Groupon.
Coupon Malls has promoted their campaigns with South Indian stars such as Harika and Bengali actress Payal Ghosh.
RedFlagDeals.com is a large Canadian bargain hunting and coupon website currently owned by Yellow Pages Group.