I wish the IAB US was as pro-active about affiliate marketing issues as their UK counterpart. Here's an example of what the IAB UK's Affiliate Marketing Council is doing across the pond to prevent abuse of and set standards for the use of affiliate voucher codes (coupon codes). The new code of conduct goes into effect January 1.
<strong><a href="http://www.iabuk.net/en/1/iabsaffiliatemarketingcouncillaunchescodeofbestpractice111108.html">IAB?s affiliate marketing council launches code of best practice</a></strong>
"The Internet Advertising Bureau (IAB) and its Affiliate Marketing Council (AMC) have established a code of best practice for the use of online Voucher Codes...
Under the terms of the code, sites displaying voucher codes must provide full details of vouchers on offer, legitimate activation and use-by dates. Sites must also not imply vouchers exist by encouraging the visitor to 'Click To Reveal' codes, opening the retailer's site in a new browser window and storing the affiliate cookie even when a voucher is not available.
The affiliate networks signing up to the code are Affiliate Window, Affilinet, Commission Junction UK, DGM-UK, LinkShare UK, TradeDoubler, Platform-A?s buy.at, Premier Affiliate Network, Webgains and Zanox."