I'm sick and tired of seeing display banner advertising on digg.com for Snog Tees. Because I see this same advertisement over and over, all the time, every day on digg.com, I specifically will not click it or visit the site. For some reason, seeing display advertising over and over makes me hate a brand. I'll also keep my lips sealed next time someone asks me where they can get a custom, quirky t-shirt.
Although I do have to say, the fact that I'm mentioning Snorg Tees here may actually be a positive word of mouth buzz type exposure for them (even though I've cast their campaign in a negative light).