[Citroënbender]

Promotional emails, that link you to a regular or sales catalogue (and therefore track your interests). You might check the prices on a couple of items genuinely in your sights, but buy nothing. Again, all of this will have been logged by the site.

Then you get a follow-up email telling you to have another look at their wares… But no one-off discount offers or other incentives, just a repeat badgering. If it wasn’t good enough the first time, what makes them think it’s going to appeal later?