You know how sometimes you visit a website, and then you start seeing ads for that business all over the place, on a lot of the sites you visit? I’ve always wondered about that, but I have to admit I never looked into it. Turns out there’s a technique called “remarketing” or “retargeting” that does this. The idea is that you will be reminded of the website and the advertiser will have further opportunities to make an impression on you.
I learned all this from a short article called Are PPC Ads Following You?, written by Pay-Per-Click Manager Robert Brady of Righteous Marketing. Here’s how it works, from a technical perspective:
- The site owner places a snippet of code on their website.
- Site visitors have a cookie placed on their browser when they visit the website.
- The advertiser creates ads and targets all users with the cookie on their browser.
- Any site using Google to serve ads can then show targeted ads when the cookie is detected.
This technique is clearly effective, but as Mr. Brady points out:
When creating your ads, be careful not to be creepy. While you may want to remind them that they were on your site, the average user doesn’t understand how remarketing works. They just see your ads in places they might not expect it. And don’t overdo the frequency. Most platforms, Google included, allow you to set a frequency cap so they only see your ad a certain number of times/day. This helps decrease the creepiness a lot.
In the end, this is a chance to bring back some of the lost sheep that you worked so hard to get in the first place – even if it does require you to follow them around.

One of the great things about PPC advertising is that you can test multiple versions of your ads. I like to write a whole bunch to see which ones get the most clicks. I deactivate the duds, then write new ads which are variations on the winning ads. Sometimes I only change one word.
