Some big marketers, relatively new to online marketing, have had their ads served via spyware-generated pop-ups, junk websites and other unseemly media, writes ClickZ (via MarketingVOX); so, in an effort to end affiliate marketing practices and ad network buys that undermine brand, the Direct Marketing Association (DMA) has released relevant best practices guidelines. “The Federal Trade Commission had talked to us specifically about advertisers knowing where their ads were placed,” Jerry Cerasale, the DMA’s SVP of government affairs, told ClickZ.