Don't let your customers know what you think of them

Suggestion for eBay Australia: when sending unsolicited advertising emails trying to entice people to engage in further commerce with your site, here's an email heading you may wish in future to avoid:

Are you a sucker for a bargain, [jeremy'sebaylogin]?

Reminding people that you think they are "suckers", or that they may be able to be convinced to be "suckers" if tricked into believing something to be a bargain (which it's obviously not, or they wouldn't be "suckers"), may be counterproductive. Why remind them of what you're hoping they'll fail to notice?

As my late great-grandfather told me on his deathbed: "Jeremy, don't ever use the word "sucker" in direct mail advertising. Wheeze, gasp BEEEEEEP." (Obviously only the first sentence is relevant here.)

And remember what happened to John Howard after his "C'mon suckers, fall for my bullshit a fifth time, I dare ya!" leaflet drop last year?

Exactly.