USA TODAY US Edition

You can keep ads from following you online

Often annoying, they can be turned off by taking these steps

- Kim Komando

Is this just a coincidenc­e? If you recently looked at cameras online, you’ll see ads for cameras in the margins of your browser. If you browsed new outfits, shirts and trousers emerge.

Not long ago, “interest-based advertisin­g ” creeped out a lot of people. They couldn’t understand why (for example) Facebook knew what they had just shopped for on Amazon. The truth is that personaliz­ed ads are the result of a very impersonal process.

Your details are crunched bits of data that make marketing more efficient. Interest-based advertisin­g uses informatio­n gathered through your browser. Special algorithms analyze your visits over time and across differ- ent websites. This helps predict your preference­s and shows you ads that are more likely to be of interest to you.

Sometimes, all this tracking can overwhelm the average customer. While the process is basically automatic and unmanned, such ads can feel like an invasion privacy. This is why many people look for ways to throw them off.

Here are three simple ways you can do just that.

WIPE OUT HISTORY, TURN OFF COOKIES

To start, you’ll want a clean slate. Eliminate any trace of your past searches. Clear all your browsing data, history, cache and cookies from your Web browsers.

Next, disable or limit tracking on your gadget. This includes favorite services such as Facebook.

Next, make sure you delete third-party advertisin­g cookies, too.

Afterward, take a moment and test your browser with an online security and privacy checker. I like the Electronic Frontier Foundation’s tool that shows you the informatio­n about the browser you’re using and your risk level.

OPT OUT

You may only notice a handful of culprits, but many companies use algorithms to track your behavior and send you targeted ads.

Thankfully, there’s a way for you to opt out of interest-based, or “behavioral,” ads. The Digital Advertisin­g Alliance lets you review its participat­ing partners. When you first visit the DAA, the websites will scan your computer. Once the scan is complete, you’ll be shown a list of partners advertisin­g directly to you.

From there, you can learn more about the practices these companies use for interest-based ads. You can opt out using “optout cookies” that are stored in your browser with your preference­s.

GO INCOGNITO

Every major Web browser — Chrome, Edge, Firefox, Internet Explorer, Safari and Opera — has private, or incognito, browsing. Turning this feature on means your browser will ignore cookies, including ad-tracking cookies. Your computer won’t record your browsing history, almost like you were never online.

When your browser is in private browsing mode, it will show a special icon. In Firefox it’s a mask, in Chrome it’s a little spy and in Edge it’s “InPrivate.” These all indicate that you’re in incognito or private mode.

Private browsing will keep your computer safe from casual snoopers. Someone who jumps on your computer won’t see where you’ve been.

Keep in mind that online ads aren’t necessaril­y a bad thing. Yes, they can annoy us, but they’re also the reason most online content is free. Without them, media outlets and content creators would have to find a different source of revenue. For most of us, seeing a few presumptuo­us ads is a tiny price to pay.

What questions do you have? Call my national radio show or listen to the Kim Komando Show on your phone, tablet or computer. Twitter: @kimkomando

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